9 Best Red and Blue Grow Light Strips in 2026
Nine red and blue LED grow light strips compared, from RWNTAO and Sondiko bars to Wolezek mixed-white strips and 4 ft FREELICHT fixtures, with timers and dimming.
By Ethan Cole
Updated November 2, 2026
Red and blue grow light strips use mostly red and blue LEDs, the two colors chlorophyll absorbs most strongly, instead of white LEDs. The result is the familiar pink or purple glow. They tend to be small, inexpensive, and easy to stick under a shelf, which is why they remain popular for seedlings and succulents.
This guide compares nine strips and bars that list red and blue diodes, including several that add warm white or yellow LEDs so the light looks less purple. If you would rather have white light in a room you use, see grow light strips and warm white grow lights.
Safety note: grow lights are plug-in electrical fixtures. Follow each maker’s minimum distance from leaves, keep drivers, timers, and plugs away from watering and misting unless the listing gives a water rating, and do not look straight into the LEDs at close range. Lights with UV or IR diodes are marked in the specs below. We describe what each maker lists; we do not promise growth results for any plant.
All Products Compared
| Product | Best For | Bars or Length | LED Mix (Listed) | Timer | Dimming |
|---|---|---|---|---|---|
| RWNTAO Two Strip, 13 in | Best Overall | 2 bars | 16 red, 16 blue, 16 yellow per bar | 3/9/12H | 10 levels, 3 modes |
| Sondiko Red Blue Strip | Lowest Cost | 1 bar, 13.2 in | Red and blue, 420 to 800nm | Yes, daily repeat | 4 levels |
| Wolezek 14 in (4 Bars) | Red and Blue with White | 4 bars | 6000K + 3500K white, 660nm red, 450nm blue | 6/12/16H | 5 levels, 3 modes |
| iPower 20W (2 Tubes) | Two Tubes on a Budget | 2 tubes | 96 red and blue | 3/9/12H | 10 levels |
| Hywyimlait 7.8 in (4 Head) | Small Pots | 4 bars | 9 red, 9 blue, 9 yellow per bar | 4/8/12H | 10 levels, 3 modes |
| ZONE 11.8 ft Tape Kit | Flexible Tape | 11.8 ft strip | Red and blue | None listed | None listed |
| FREELICHT 4 ft Red Blue (2 Pack) | Long Shelves | 2 x 4 ft | 660nm red, 460nm blue | None listed | None listed |
| iPower 40W (3 Tubes) | Three Tubes | 3 tubes | 144 red and blue | 3/9/12H | 10 levels |
| HOPLOM T5 1 ft (2 Pack) | Linkable Tubes | 2 x 1 ft | Red to blue 3:1 | None listed | None listed |
| Award | Product | WikiHomeLED Score About WikiHomeLED ScoreThe WikiHomeLED Score is our own rating from 0 to 10, calculated the same way for every product from Amazon buyer ratings, adjusted for how many ratings each product has. It is never influenced by manufacturers, retailers, or affiliate commissions. Learn more › | Price | |
|---|---|---|---|---|
| Best Budget |
RWNTAO Two Strip Growing Lamp for Indoor Plants
|
8.4/10 | $12.99 | Buy |
| Best Overall |
Sondiko LED Grow Light Strip,Red Blue Spectrum
|
8.4/10 | $8.99 | Buy |
| Best Premium |
Wolezek 14in Grow Light Strip for Indoor Plants
|
8.4/10 | $22.99 | Buy |
| Best Value |
iPower 20W LED Grow Light Strips for Indoor Plants
|
8.2/10 | $15.99 | Buy |
Hywyimlait 7.8'' Growing Lamp for Indoor Plants
|
8.2/10 | $19.99 | Buy | |
11.8ft Full Spectrum LED Grow Light Strip 24W
|
8.1/10 | $19.98 | Buy | |
FREELICHT 2Pack 4FT Grow Light for Indoor Plants
|
8.1/10 | $39.99 | Buy | |
iPower 40W LED Plant Grow Light Strips Full
|
8.1/10 | $17.43 | Buy | |
T5 Grow Lights for Indoor Plants Linkable 1ft LED
|
8.1/10 | $14.99 | Buy |
RWNTAO Two Strip Growing Lamp for Indoor Plants
Sondiko LED Grow Light Strip,Red Blue Spectrum
Wolezek 14in Grow Light Strip for Indoor Plants
iPower 20W LED Grow Light Strips for Indoor Plants
Hywyimlait 7.8'' Growing Lamp for Indoor Plants
11.8ft Full Spectrum LED Grow Light Strip 24W
FREELICHT 2Pack 4FT Grow Light for Indoor Plants
iPower 40W LED Plant Grow Light Strips Full
T5 Grow Lights for Indoor Plants Linkable 1ft LED
Top 3 Red and Blue Grow Light Strips Reviewed
#1 RWNTAO Two Strip Growing Lamp, 13 in: Best Overall
Why We Picked It
RWNTAO’s two-bar kit scores 4.4 stars on about 1,600 ratings, pooled with its three and four-bar versions. Each 13-inch aluminum bar carries 48 LEDs split evenly between red, blue, and yellow, so the light is pink rather than deep purple.
A controller sets a daily 3, 9, or 12-hour timer, 10 brightness levels, and 3 color modes. The kit includes screws, ties, double-sided tape, and magnets, so it mounts on wood, metal, or wire shelves.
Key Specifications
- Bars: 2 x 13 in
- LEDs: 48 per bar (16 red, 16 blue, 16 yellow)
- Timer: 3/9/12H, repeats daily
- Dimming: 10 levels; 3 color modes
- Mounting: screws, ties, tape, magnets
- Housing: aluminum
| Pros | Cons |
|---|---|
|
|
Things to Consider
Like most strips at this size, RWNTAO does not publish PPFD or wattage on the listing, so compare coverage by bar length and LED count.
Best For
A shelf of succulents or a seed tray under a cabinet.
Skip It If
Skip it if the light will be in a living room and the pink glow bothers you.
Check current pricing and availability for the RWNTAO Two Strip Growing Lamp, 13 in.
#2 Sondiko Red Blue LED Grow Light Strip: Lowest Cost
Why We Picked It
Sondiko’s single bar scores 4.4 stars on about 1,350 ratings and is the least expensive light here. It is a 13.2-inch red and blue bar with a controller that sets a daily on/off timer and 4 brightness levels (25 to 100 percent).
The listing is inconsistent on LED count: the title says 48 LEDs, the text says 40. Screws, double-sided tape, and zip ties are included.
Key Specifications
- Length: 13.2 in (listed)
- LEDs: 40 or 48 (listing conflict)
- Spectrum: red and blue, 420 to 800nm listed
- Timer: daily repeat
- Dimming: 4 levels
- Mounting: screws, tape, zip ties
| Pros | Cons |
|---|---|
|
|
Things to Consider
One short bar is enough for a few small pots. For a tray or shelf, the multi-bar kits cover more area.
Best For
Two or three small plants, or a first grow light to try.
Skip It If
Skip it if you need to light a full shelf.
Check current pricing and availability for the Sondiko Red Blue LED Grow Light Strip.
#3 Wolezek 14 in Grow Light Strip (4 Bars): Red and Blue with White
Why We Picked It
Wolezek mixes 6000K cool white, 3500K warm white, 660nm red, and 450nm blue LEDs on each 2-inch-wide bar, 105 LEDs per bar. It scores 4.6 stars on about 360 ratings, and the curved housing has a PC cover that Wolezek says keeps dust and mist off the LEDs.
The controller offers 3 light modes, 5 brightness levels, and a 6, 12, or 16-hour timer. A two-bar version is in our grow light strips guide.
Key Specifications
- Bars: 4 x 14 in (13.8 in listed)
- LEDs: 105 per bar
- Spectrum: 6000K + 3500K white, 660nm red, 450nm blue
- Timer: 6/12/16H
- Dimming: 5 levels; 3 modes
- Mounting: screws, zip ties, tape
| Pros | Cons |
|---|---|
|
|
Things to Consider
This is the pick if you want the red and blue diodes but a light that looks closer to white.
Best For
Cabinets and shelves in rooms you use.
Skip It If
Skip it if you want pure red and blue for the lowest cost.
Check current pricing and availability for the Wolezek 14 in Grow Light Strip (4 Bars).
How to Choose Red and Blue Grow Light Strips
Pure Red and Blue or Mixed
Pure red and blue strips look purple and make it hard to judge leaf color. RWNTAO, Hywyimlait, and Wolezek add yellow or white LEDs for a more natural look.
Bar Count and Length
Short single bars cover one or two pots. For a seed tray or a full shelf, choose a multi-bar kit or the 4 ft FREELICHT fixtures.
Timer and Dimming
Most strips here have a controller with a daily timer. ZONE, FREELICHT, and HOPLOM do not; use an outlet timer with those.
Power Source
Several small strips run from USB adapters or a small inline supply. Check whether the adapter is included before you buy.
How We Evaluate Red and Blue Grow Light Strips
We did not grow plants under these lights. We compared manufacturer specifications and Amazon listing details, and ranked products by the WikiHomeLED Score, which adjusts the Amazon star rating for the number of ratings (ratings checked November 2, 2026). To qualify, a product had to be a grow light strip or bar that lists red and blue LEDs, with at least 20 ratings and a rating of 4.1 stars or higher, one listing per product family. PPF, PPFD, lumen, and wattage figures are as published by each seller and are not our measurements. The full method is on our How We Review page. None of these sellers publishes PPFD for the strips, so we compare LED count, bar length, and controls.
Frequently Asked Questions
Are red and blue grow lights better than white?
Not necessarily. Red and blue diodes match chlorophyll’s absorption peaks, while white full spectrum LEDs include those colors plus others. White is easier to live with; red and blue strips are often cheaper per bar.
Why do red and blue grow lights look purple?
Your eyes blend the red and blue light into pink or purple. Strips that add white or yellow LEDs look closer to natural light.
Are purple grow lights bad for your eyes?
Bright LEDs of any color are uncomfortable to look at directly. Mount strips so the diodes face the plants, not the room, and do not stare into them.
Can I use red and blue strips for seedlings?
Many people do. Keep them close to the tray as the maker recommends, and use the timer so seedlings also get dark hours.
Final Verdict
The RWNTAO two-bar kit is the best all-round red and blue strip: a large rating base, a timer, dimming, and magnets for mounting. Sondiko is the cheapest way to light a few pots, and Wolezek is the choice if you want red and blue diodes in a light that looks mostly white. For long shelves, the FREELICHT 4 ft fixtures link up to four.
About the author
Ethan Cole leads research and editing at WikiHomeLED, comparing LED lighting for the home through manufacturer specs, manuals, safety listings and owner feedback. Every product is scored against the criteria on our How We Review page, and picks are updated when models change.