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Bloom and Flowering Grow Lights

LED grow lights for flowering are engineered for crops in their peak reproductive phase. Red and far-red wavelengths dominate here, boosting bud and fruit development while supporting photoperiod needs.

These bloom red lights are commonly used in grow tents and commercial rows due to their deep canopy penetration and efficiency. Growers aiming for maximum yield without sacrificing quality will benefit from lighting that aligns with upper DLI recommendations.

Optimize your indoor grow with our energy rebates program and bulk pricing, plus read our comprehensive blog to understand how PPFD and light penetration affect plant canopies.

Grower's Choice DE MH 4K 600 Watt Bulb Save $86.00 Save $0.00
$145.00
$145.00 - $145.00
$145.00
$59.00
$59.00 - $59.00
$59.00

Grower's Choice 4K 600 Watt Double Ended MH Bulb

Grower's Choice

The Grower's Choice 4K bulb is a slightly warmer metal halide, making it suitable for both flowering and vegetative growth. Growers get the most us...

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$145.00
$145.00 - $145.00
$145.00
$59.00
$59.00 - $59.00
$59.00
Save $86.00 Save $0.00
Compact view of fully folded Grower's Choice ROI-FV 650W LED Bar for storage or transport.
Grower's Choice ROI-FV 650W LED Bar shown upright and partially unfolded for canopy light distribution. Save $400.00 Save $0.00
$1,099.00
$1,099.00 - $1,099.00
$1,099.00
$699.00
$699.00 - $699.00
$699.00

Grower's Choice ROI-FF 650W 4 x 4 Flowering Light

Grower's Choice

Dial in explosive flowering performance with 1950 PPF output, a 3.0 µmol/J efficiency rating, and a spectrum built to fuel dense, terpene-rich yiel...

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$1,099.00
$1,099.00 - $1,099.00
$1,099.00
$699.00
$699.00 - $699.00
$699.00
Save $400.00 Save $0.00
Dual PPFD maps for the Master 6 Bloom LED in a 5x5 grow tent, with average PPFD values of 882 at 12" and 823 at 16" height.
Bottom view looking up at the Master 6 Bloom Red LED light showing 6 diode-filled light bars in a symmetrical layout.
$1,100.00 - $1,100.00
$1,100.00
$1,100.00 - $1,100.00
$1,100.00

Grand Master LEDs Master 6 Bloom Red

Grand Master LEDs

Drive explosive bloom cycles efficiently with powerful full-spectrum lighting ideal for tight grow spaces. For commercial growers, vertical farms, ...

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$1,100.00 - $1,100.00
$1,100.00
$1,100.00 - $1,100.00
$1,100.00

Frequently Asked Questions

What color spectrum is best for flowering bud?

During flowering, buds benefit from a red-heavy spectrum, which encourages budding and helps maximize yields. However, a full-spectrum light, which includes some blue, white, and other wavelengths, more closely mimics sunlight and produces healthier, higher-quality buds.

Can I use only red lights during flowering?

You can, but it's not recommended. While red light promotes flowering, using only red limits the plant’s access to other beneficial wavelengths like blue, green, and cyan. Full-spectrum lights or red lights combined with warm/cool white LEDs produce better results by providing a broader range of usable light.

Should I run all my lights (red, blue, and white) during the flowering stage?

Yes. Running all available LEDs creates a fuller light spectrum, closer to natural sunlight. This helps the plant develop more balanced growth and maximizes yield. Even during flowering, plants still use some blue and other wavelengths, not just red.

What happens if I use red and blue lights during flowering?

Red and blue combinations (sometimes called “blurples”) can support flowering but miss key parts of the light spectrum, like green and yellow. While you may still grow decent buds, modern full-spectrum LED lights (including white light) generally outperform blurple setups in both yield and quality.