10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (2024)

What We Like

  • Adjustable stand

  • Timer and dimmer settings

  • Full spectrum lighting

  • Hanging hardware if needed

What We Don't Like

  • Can’t adjust individual light bulbs

  • Doesn't add to your decor

Out of all of the grow lights we tested, the LBW Grow Light stood out as being the most versatile. Thanks to its full spectrum lighting (380nm to 800nm), and adjustable tripod and gooseneck (adjustable arm), this grow light provides the right amount of light for various stages of plant growth, from seedlings to larger plants.

We were so impressed after our original round of testing with basil, tomato, and spinach seeds, that we moved all of our houseplants–basil, spider, ivy, and other standard green non-flowering house plants and small clippings—under the light during the winter months in Iowa. Some of the plants had shown signs of slowing down for the winter, but moving them under the light allowed them to thrive again.

While you can’t adjust the red, blue, warm, white, and cold white chips individually, we found it easy to change the six brightness settings and set a timer for four-, eight-, or 12-hour intervals on the controller for the entire unit. The light also comes with hardware, so you can hang it from the ceiling if that works better for your needs.Also, note that this isn't a subtle grow light or particularly stylish, so it does stand out.

We've continued to use this light in our basement, so we haven't found it to be distracting at all. However, if you do want to put it away when not in use, the tripod is easy to fold and store, and the light doesn’t take up much room. If you find that you need even more lighting, this option is available with two lightheads and with a larger lighthead (or without the timer, for a few dollars less).

Dimensions: 8.7 x 4.9 inches (light), 15 to 48 inches (stand) | Bulb Type: LED | Wattage: Not listed

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (2)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (3)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (4)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (5)

What We Like

  • Blends into decor

  • Easy set up

  • 12-hour timer

  • Bright, natural light

What We Don't Like

  • Analog timer isn't as easy to use as digital

Hanging grow lights allow you to save space while providing light for a larger number of plants. But they can be tricky and time-consuming to install, and sometimes, they don’t blend in well with your decor. While testing the Soltech Aspect Grow Light, we found it to be a great hanging option because it’s easy to install and looks like a regular light fixture (including the braided cable), so it blends in even in small spaces.It's also easy to adjust as your plants grow.

Over six months of testing during a New York winter, this grow light has made our houseplants flourish, with new branches, ripening fruit, or blooming flowers. Our plants under the grow light continue to do much better than those receiving only natural light by the window.

We originally tested the smaller version of this light—5.8 x 3.8 inches with 2,000 lumens, 20 watts—and were impressed by its performance and the amount of natural-looking light it emitted. We also tested the larger version—7 x 4 inches with 4,000 lumens, 40 watts—and were just as impressed. Both are extremely powerful and provide a nice amount of natural-looking light.

Whether you choose the small or large version, each grow light includes a 15-foot fabric cord, three ceiling hooks, two wall fairleads (Soltech’s cable management accessory), and a swag hook. The cable and fairleads allow you to move the lamp closer or farther away from your plants, depending on the type and growth stage.

10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (7)

Installing the larger light took us only 10 minutes. However, depending on your experience hanging fixtures and where you are installing it, it may take longer. The light comes with clear instructions, clearly labeled hardware, and instructions on which drill bit to use depending on the surface, which we found helped speed along the process.

Like any other grow light, and especially for any requiring installation, make sure you hang it in an area where you won’t find it distracting. The light doesn’t have any dimming capabilities, and while it provides a nice, effective growing light, it is very bright (although the smaller version is less bright).

It does come with an analog timer (although we swapped that out for a smart plug), providing light for 12 hours per day, and other than that, it has no other features, you simply plug it in.

Size: 4 x 4 x 7 inches | Type: LED | Wattage: 40 watts

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (8)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (9)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (10)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (11)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (12)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (13)

What We Like

  • Three lighting settings

  • Stylish and available in two colors

  • Touch or app controls

  • Longer timer

What We Don't Like

  • Not designed for larger plants

If you want a stylish fixture that adds to your decor, we love the AeroGarden Trio Grow light. During our six months of testing, we found that it’s perfect for smaller houseplants or seedlings (we used it on seedlings, succulents, and other small plants) because it has three adjustable lamp heads (11 to 17 inches) and blends in perfectly on a bookshelf or table.

It also offers different lighting settings—full-spectrum, white, warm, and cool—that you can choose depending on the plant stage.

We think this is a great grow light for beginners because it took less than three minutes to set up and is easy to use. The timer is automatically set to 10 hours. Just tap the light to change the lighting modes or to turn it off and on.

For more setting options, we downloaded the app to our phone (although it’s not necessary for basic use). There, we could program the light to fade in and out at sunrise and sunset, adjust the timer, and more. And unlike other options on this list, it has a longer timer setting (up to 24 hours), so you can program it for longer cycles if needed. We found the app to be hard to use at first, but once we selected our grow light type, we had no trouble using it.

It does require a little bit of work to make sure the lights hit your plants at the right angle without toppling over, but we found that this just takes a few minutes to adjust. We like how wide a radius of light it produces for such a small grow light, making it good for small spaces but also able to cover a lot of plants at once. But keep in mind that this grow light is designed for plants less than 12 inches tall, so you will need another option for larger plants.

Dimensions: 17 x 11 x 24 inches | Bulb Type: LED | Wattage: 5 watts

What We Like

  • Four flexible lights

  • Strong, stable clamp

  • Includes timer with three settings

  • Can dim and adjust the lighting colors

What We Don't Like

  • Doesn't include a stand

If you want to control the type of light at each stage of growth, the Leoter Grow Light is a great choice. We loved how simple this light was to set up, with no assembly required. We found it very easy to clip onto our bookshelf where we were starting our seedlings. The four lights were very easy to bend and adjust, which came in handy when we wanted to cover multiple plants or as our seedlings grew taller.

While this grow light is relatively simple in design—there are no smart features or touch controls—we found the remote on the wire very easy to understand and use. It has a timer for three-, nine-, and 12-hour intervals and we found them to be very accurate. It also offers 10 different dimmer settings, so you can control the brightness in the room.

Unlike many lights on this list, you can choose between warm (white), red and blue, or red, blue, and warm light (380nm-800nm), depending on the growth stage of the plants. A combination of all three delivers the most positive growth results.

During six months of additional testing, including winter in Connecticut, all of our plants have continued to thrive, looking stronger and taller and producing new leaves compared to our non-grow light plants. We’ve rotated houseplants under the light and continued to grow the tomato seedlings. The clip and flexible arms make this easy, so we can easily move it around to accommodate different plants.

We’ve continued to use the 12-hour timer feature for consistent light, and we love not having to remember to turn it on and off. The only thing we would change about this grow light is the timer, which we wish had the option to stay on a little longer.

Dimensions: 13.46 x 5.71 x 3.27 inches | Bulb Type: LED | Wattage: 80 watts

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (20)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (21)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (22)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (23)

What color light is best for plant growth?

The best color light for plant growth can depend on the type of plant and the plant stage. Choosing a full-spectrum light that covers the full PAR (Photosynthetically Active Radiation) Spectrum, 400 to 700 nanometers, and includes plenty of red and blue light, is optimal for most uses.

What We Like

  • Slim and lightweight design

  • Multiple placement options

  • Includes timer

  • Tap on light to control and adjust brightness

What We Don't Like

  • Adhesive might not be strong enough for all surfaces

Don't let the simple design of the Soltech Solutions Grove LED Grow Light fool you: This versatile grow light has many "hidden" features to help you provide the right amount of light for your seedlings or houseplants. We found it surprisingly lightweight, and it takes just a few minutes to install on a shelf or wall (or you could place it right onto a shelf). We chose to stick it onto our wall, but it also comes with hardware, so you can screw it onto the wall for a more permanent placement.

The lighting is bright, but you can change the settings by tapping on the bulb. Placing it under a shelf will also help keep the lighting from spilling into the room. You can also rotate the bulb to direct the lighting towards your plants.

We found the timer to be a bit tricky to set up but it does come with clear instructions (we misplaced them for a bit but once we found them, they were easy to understand). You do need to set up the timer at the time you want the lighting to start, but can then program the amount of light you want in 24 hours. If you’d rather just turn it on and off when you want it, you can just tap the bulb, or use the "outlet on" switch on the timer.

We do want to note a few hiccups we had during the installation. Make sure the wall or shelf is smooth, since it may not strongly stick to textured surfaces. We installed it on a slightly textured wall, and it did have a hard time staying put (and did take a little paint down in the process). This proved to be an impromptu durability test, since it fell onto the floor a few times and still worked perfectly with no scratches. Once we installed removable Command Strips, we never had any other issues.

This isn’t an ideal option if you know you will need to move your lighting as the plants grow (unless you don’t install it on the wall), but it’s great for small houseplants or seedlings that you know you will move outside once they grow taller. After six months of use, we noticed new growth in houseplants that had struggled in the past, and our seedlings continued to thrive.

Dimensions: ‎‎18 x 1 inches | Bulb Type: LED | Wattage: Not listed

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (25)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (26)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (27)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (28)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (29)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (30)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (31)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (32)

What We Like

  • Easy to set up and maintain

  • Self-watering and grow light on a timer

  • Touch screen and instructions are very intuitive

  • Can grow up to nine plants at a time

What We Don't Like

  • Need to use special pods

If you want a "set it and forget it" indoor garden system, complete with an LED grow light and self-watering feature, you'll love the AeroGarden Bounty Basic Indoor Gardening. We tested this hydroponic system for three months in our lab and six months at home and found it to be an effortless way of growing herbs and vegetables indoors each time: We only needed to spend about five minutes a week tending to our plants.

Overall, we think this system is especially helpful for those who may forget to water, feed, or turn the light on for their plants, as you can set up the timer and be alerted on the touch screen when food or water runs out. And if you are going on vacation, you don't have to worry about finding someone to water your plants!

The setup was simple and took us less than 15 minutes, including preparing and planting the pods. After we inserted the pods and plugged it in, the touch screen lit up with a "Quick Plant" page to let us know the next steps.

It also gives you an estimate of how many days until growth, the water level, and when plant food is needed. We also liked the included "Trellis System." This was also easy to click in an install—like most trellises, this is to help support the plants as they grow taller.

We loved that each of the plant pods has a note indicating the plant's eventual height (short, medium, or tall), which we found particularly helpful when figuring out where to plant them (front for smaller plants, back for the taller ones). We also found the arm of the light panel easy to adjust, so we could make it taller as the plants grew (as high as 24 inches), if needed.

While this is one of the most expensive options on our list, we think it's worth it if you want a self-sufficient way of growing herbs and vegetables. Keep in mind that you do need to purchase special pods and plant food. However, AeroGarden does provide many different types of pods and plant food for purchase.

Dimensions: 34 x 17.25 x 11.25 inches | Type: LED | Wattage: 30 watts

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (34)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (35)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (36)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (37)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (38)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (39)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (40)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (41)

What We Like

  • Fits in most lamps

  • Simple to install

  • Great for a variety of plants

What We Don't Like

  • Makes a humming noise

  • No special features

For a versatile and affordable option you can easily install into most standard-sized lamps, we love the GE Grow Light LED Indoor Flood Light Bulb. We’ve tested this bulb several times, including during our most recent at-home grow light test, and think it’s a great option for beginners and more experienced indoor gardeners alike.

At 120 volts, it conveniently fits into most standard lamps, which means you don’t have to go out and buy any additional accessories or equipment, and it should blend in pretty well with your other decor.

We originally installed it in a desk lamp that we clamped onto a bookshelf (and could easily adjust to the right distance to the plants), but during our most recent test, we placed it on a flood light socket that we connected to one of our existing grow light stands, so you can place it wherever it meets the needs of your plants.

This light offers an advanced red spectrum, ideal for growing tomatoes, cucumbers, peppers, fruit trees, and flowers. While assembly is as simple as screwing in a lightbulb, the package did come with helpful height recommendations and illustrations for high-light plants (they listed tomatoes, cucumbers, and peppers), as well as low-light plants (leafy greens and herbs). It also recommends using the light 18 hours a day. This bulb does not come with a timer, but we were able to use one of our own.

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (43)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (44)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (45)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (46)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (47)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (48)

We think it's also a great option for an outdoor plant you want to bring in during the winter months. When we brought a coleus in to overwinter indoors, it did quite well. We also grew cilantro and a cucumber seedling.

Unlike many other grow lights on this list, you will need to replace the bulb in a few months (depending on how often it is used). However, you can buy it in packs of two, so you'll always have a replacement handy. Also, this light is similar to a flood light, so it can be bright but can be pretty lightweight to move (depending on the lamp).

We did notice humming from the lightbulb (when on) during our testing, which only got more distracting as time went on. So we recommend placing this lightbulb in an area where the noise isn't disturbing. However, for a simple way to provide supplemental lighting to one plant or a few small plants, this continues to be a great choice.

Dimensions: 4.06 x 5.94 inches | Type: LED | Wattage: 9 watts

Expert Tip

We love that this lightbulb fits in any standard lamp and that you don't necessarily need to buy a new one. However, you could give your plants the light they need plus add a fun decor element to your space with a stylish, adjustable, pendant lamp. We like the HXLMS Rattan Hanging Lamp which is both adjustable and dimmable.

What We Like

  • Covers a larger amount of seedlings or plants

  • Can connect multiple lights together on the same circuit

  • Brightness settings

  • Doesn't get too warm

What We Don't Like

  • Fixture doesn't blend in well in small spaces

  • No build-in timer

While testing the Mars Hydro LED Grow Light, we found that it’s a great option for basements and other areas in your home that are dedicated to growing seedlings and plant care. We love that multiple fixtures (purchased separately) can be connected utilizing the same control panel, also known as daisy chaining. This comes in handy if you have a larger amount of plants and space.

Installation does require several steps, but it only took us eight minutes to set it up. However, it might take longer, depending on your experience with mounting fixtures and if you are connecting more than one.

We found this grow light to be a "mini sun" in our basement. It is a bright light and has allowed us to grow lettuce, even during the winter, and get a jump start on our seedlings. However, it hasn't been as successful with plants that fruit or flower, perhaps due to the lighting it produces or difficulty with pollination.

For other plants, the light has made a huge difference in their growth compared to those with no grow light. We grew basil and thyme under the light throughout the cold winter months, providing our kitchen with a steady supply of fresh herbs.

This full-spectrum grow light does not come with an internal timer, but we were able to use one of our own to make sure our plants were getting an adequate amount of light. We like that the control panel does have a dimmer, giving you several intensity options. We set this light up in our basement, so we didn’t mind that the light flooded the room.

Setting this light up in a grow tent, cabinet, or under a shelf could help with this, but otherwise, this light wouldn’t be a great option for common areas in your home where you wouldn’t want a bright light. It also doesn’t have a cable management system to keep the cords out of sight (which might not be an issue in a basement or other dedicated space).

Dimensions: ‎‎5.5 x 17.3 x 16.9 inches | Bulb Type: LED | Wattage: Not listed

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (50)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (51)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (52)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (53)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (54)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (55)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (56)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (57)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (58)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (59)

What We Like

  • Compact size

  • Easy to set up

  • Can adjust the height of lighting

What We Don't Like

  • No additional features

Whether you are starting seedlings indoors for the first time or need a small option for your space, this grow light from iGrowtek will give your plants a good start. At 2 feet long, this grow light setup doesn’t take up much room and fits a larger seeding tray or a few plants. We used it in our basement, but you could fit it on a small table in any room, as long as you don’t mind a bright light.

We installed the light and stand in under five minutes, which included putting the light on the iron stand, adjusting the straps to get the light to the right height, and plugging it in. It does come with instructions, but we found the fixture was intuitive enough to set up without them.

Aside from the stand and adjustable cords, the light doesn’t come with any other features, like a timer or dimmer, so you will have to remember to turn it on and off (or purchase an external timer).

Remember that this setup is only for seedlings or very small plants. The light can only be as high as 6 to 7 inches, so you will need to move your plants to a different grow light if you want to continue to keep them indoors. However, this is a great choice if you want to get ahead of the growing season and start your seedlings indoors.

Dimensions: ‎‎‎27.2 x 2.3 x 19.7 inches | Bulb Type: LED | Wattage: 10 watts

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (61)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (62)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (63)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (64)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (65)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (66)

How do seedlings benefit from grow lights?

While you can start seedlings indoors utilizing natural light, grow lights can help create stockier plants for transplanting, according to Aaron Steil, Consumer Horticulture Extension Specialist, Department of Horticulture, Iowa State University. "They transplant better than lanky ones, and almost universally, we don't have enough light even in the brightest windows to produce robust stocky plants."

What We Like

  • Space-saving

  • Expandable

  • Great for starting seedlings

What We Don't Like

  • Lengthy assembled compared to other grow lights

  • Harder to adjust lighting as plants grow

If you want to start your garden by planting seeds indoors but have limited horizontal space, the LED Stack-n-Grow Lights System by Gardener’s Supply Company is a great solution. During testing, we loved that this compact, stackable design didn’t take up much floor space and allowed us to keep counters and other surfaces free. More importantly, our seedlings thrived under the full-spectrum lighting during the entire six months of testing.

This unit doesn’t come with a timer or dimmer—depending on placement, the lighting could be a distraction (especially if you add additional shelves and lights), since it brightens the room. We set it up in our basement so it wasn’t an issue, and we also used an external timer to avoid remembering to turn on and off the lights.

While we didn’t find it hard to assemble, it did take the longest on this list, at 35 minutes. The instructions were clear, but this is a larger setup, and taking it out of the packaging and assembling all of the pieces takes longer. We found it tricky to attach the light to the overhead rack, and we needed an extra person to help, but that was the only small hiccup in the process.

Note that it is a bit tricky to adjust the height of the shelves and lighting as your seedlings grow. Our tomato plants started growing into the light, and we wished moving the light was as simple as some of the other options on this list (for example, our best overall, the LBW LED Grow Light, which we just had to move the gooseneck arms of the light). However, if you are starting seedlings, this isn’t something you’ll need to do too often.

Dimensions: 31 x 15.5 x 21 inches (base measurements) | Bulb Type: LED | Wattage: Not listed

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (68)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (69)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (70)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (71)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (72)

  • 10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (73)

Final Verdict

Out of the 16 grow lights we tested, our best overall pick is the LBW LED Grow Light With Stand. This full spectrum grow light impressed us with its versatility and features, which include a timer, dimmer, adjustable stand, and adjustable gooseneck arm, which makes it a good option for different spaces and plants. If you want a grow light that includes a hydroponic system, taking care of the watering and lighting for you, we like the AeroGarden Bounty Basic Indoor Garden, our best indoor garden pick. It includes seed pods, walks you through a simple setup, and reminds you when it's time to add plant food.

10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (74)

Other Options We Tested

Dymond BoostGro LED Grow Light Full Spectrum: Although the Dymond BoostGro LED Grow Light had a lengthy 45-minute setup process, we loved that it provides effective lighting for long, narrow spaces. It doesn't come with a timer, but we were able to hook it up to an external smart timer. We don't recommend this lighting for small spaces where a bright light would be distracting, since there is no dimmer feature. However, if you use the included wires to lower it, or set it up under a shelf (we used double-sided tape), that could help with this issue.

How We Tested the Grow Lights

Over the last few years, we've tested grow lights at home, as well as in our lab for six months. So far, we've tested over 16 different grow lights, as well as 18 different indoor gardens (12 of which included grow lights). Each grow light was evaluated on setup, effectiveness, design, brightness, and value.

Setup: After setting up a timer, we set up each grow light according to the manufacturer's instructions. We noted if the instructions were clear or confusing, how many people were required for assembly, and if we had any other issues along the way. We also noted how easy to the grow light was to use during the testing period, including if the features were intuitive and easy to use and if the grow light could be adjusted as the plants grew.

10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (75)

Effectiveness: We set up three pots for each grow light. After using the same brand of soil, we added either tomato, basil, or spinach seeds to each pot and labeled each pot accordingly. We set them up in an otherwise dark room away from natural light. We also set up three similar pots but placed them near a window and monitored the seedlings' progress with natural lighting. For both the grow light and natural light plants, we set up a hygrometer to record and monitor the temperature and humidity to make sure it was good. We took care of each plant the same, watering them when needed, and recorded the seedlings' height with a measuring tape after a 3-week and then a 6-week period.

After the first six weeks of testing, the seedlings with grow lights grew 81 percent taller on average than the seedlings that just used natural sunlight. The tomato plants under the grow lights were the fastest growers.

10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (76)

Design: During our testing process, we noted how much space the grow light occupies and used each feature, including any internal timers (which we tested for accuracy), dimmers, stands, and smart features.

Brightness: We noted how much light was cast into the room, if it was adjustable, and the color of light. We also noted how much heat was provided by placing our hand underneath the light (note that none of these LED grow lights produced a lot of heat).

Value: After the testing period, we noted what we liked and didn't like about each product and if we felt that the price was reflective of its features.

Long-term testing: We continued testing each product for six more months, during the winter months across the country, and added our notes to this list. We used the lights to keep growing the seedlings, or to provide other houseplants with a consistent, longer amount of light than they would get compared to a window. We found that all of the grow light plants continued to thrive and show new growth compared to those only under natural lighting.

What to Look for in a Grow Light

The Right Size for Your Plants and Space

When deciding which size grow light you need, think about how many plants you need to cover and where you intend to put them. If you plan to move your light from place to place or just use it during certain times of the year, opt for something portable that doesn't need to be installed into the ceiling or the wall. Our best overall pick covers several plants and can easily be moved or stored.

If you do want to utilize wall or ceiling space our best hanging pick is a great option that isn't too large and will blend in easily with your decor. However, if you do need a fixture that will cover a larger number of plants and you have a designated space for your plants (without being distracted by bright lights), our best large capacity pick is a great choice. It can also be expanded with multiple lights onto the same control panel.

Wherever you plan to put it, make sure there’s room for it to operate safely and not up against furniture, drapes, or other items.

The Type of Lighting Fixture

There are various types of grow lights to consider, from panels to products that hang overhead or screw into standard light fixtures. The type of plants you have, the amount of existing natural light, and where your plants are located help you narrow down your choices. Typically, hanging lights are larger, while desktop lights are smaller and easy to move around. If you want a complete system, consider indoor herb gardens with a planter, self-watering feature, and built-in light.

The Ideal Location

“Hanging your lights too low can burn your plants, but hanging them too high can leave them stretching for light, and weak,” says Kansas City-based Melissa Lallo Johnson, host of Art of Gardening, a vlog and podcast that features influential gardeners from around the world. The standard placement recommendation for incandescent grow lights is at least 24 inches from plants.

Since fluorescent and LED lights have lower heat outputs, they can be placed 12 to 18 inches away from plants. Indoor garden systems with extendable lights are helpful in ensuring that your plants do not burn while they grow.

Different plants require different intensities of light, however. If you grow seedlings, Johnson recommends positioning them within 2 to 3 inches of a fluorescent light source or as close to the light as possible without touching it. Hanging or positioning lights directly over plants is the best arrangement because it mimics sunlight and ensures that the entire plant receives adequate light.

The Type of Bulb

All of the options on this list feature LED lights, which tend to be the most popular and most energy-efficient options. They also offer ideal light spectrum ranges. LEDs emit less heat than incandescent bulbs and can last up to 30 times longer. “LED lights are my preferred go-to for lights because they’re energy-efficient and generate little to no heat,” Johnson says.

Fluorescent lights are more energy efficient than incandescent bulbs (but not as much as LED lights), but they tend to be pricier.

Incandescent bulbs are the least expensive option, but they’re also the least energy efficient. They also have fairly high heat outputs, which is not the most ideal growing condition.

How much wattage do you need?

Wattage is a useful tool to determine the correct fixture for your plants. Generally, you need 32 watts per square foot, so most indoor plants (especially herbs) do just fine with a lower-watt light. The more important metric is PPFD, or photosynthetic photon flux density, which measures the specific light emission a lamp gives off. Not all products list this, however.

The Right Amount of Lighting

The beauty of indoor grow lights is they allow herbs, seeds, houseplants, and flowers to flourish year-round. However, they need the right amount of sunlight and darkness to thrive. Johnson says that for germination and seedlings, you can run lights 16 to 18 hours per day until they are a few inches tall. "As they mature," she adds, "you can slowly reduce to get them on a similar light pattern for spring before you transplant them.”

After some experimenting, you should be able to peg the optimal duration for your specific plant variety. A grow light with a built-in timer makes it easier to control proper light levels, especially if you’re away from home. Most of the grow lights on the list feature built-in timers.

However, you can most likely add an external timer or even a smart timer like we did during testing to those without one. For example, we were able to use an external timer for our best light bulb pick. Johnson suggests that you try to get the light schedule as close as possible to the current sun pattern so your plants are less shocked when transplanted outdoors.

Why Trust The Spruce?

Jenica Currie is an editor for The Spruce and has been with the team since 2020. She updated this article with our most recent testing insights from grow lights and indoor gardens we tested at home. Currie is an avid gardener and has been using the AeroGarden Bounty Basic for several years to grow herbs indoors. She is currently testing the Soltech Grove LED Grow Light and has the AeroGarden Trio Grow Light in her basement to brighten up the decor (and give a few houseplants some light).

Our Experts:

Read Next

  • The 10 Best Greenhouses of 2024
  • The 15 Best Places to Buy Plants Online, According to Our Editors
  • The 11 Best Gardening Tools of 2024, Tested and Reviewed

1 of 3

10 Grow Lights We Tested For Keeping Houseplants and Seedlings Happy All Winter (2024)

References

Top Articles
Latest Posts
Recommended Articles
Article information

Author: Amb. Frankie Simonis

Last Updated:

Views: 5993

Rating: 4.6 / 5 (56 voted)

Reviews: 95% of readers found this page helpful

Author information

Name: Amb. Frankie Simonis

Birthday: 1998-02-19

Address: 64841 Delmar Isle, North Wiley, OR 74073

Phone: +17844167847676

Job: Forward IT Agent

Hobby: LARPing, Kitesurfing, Sewing, Digital arts, Sand art, Gardening, Dance

Introduction: My name is Amb. Frankie Simonis, I am a hilarious, enchanting, energetic, cooperative, innocent, cute, joyous person who loves writing and wants to share my knowledge and understanding with you.