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What color should grow lights be?

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hydroponics led grow lights ECO Farm

Once you start growing vegetables & other plants, you might wonder how to make them grow better. A common question is: Does the color of light affect plant growth?

The color of light DOES affect plant growth, but the effect is more noticeable under low light intensity. Red & blue light are most effective for plant growth, while yellow & green have minimal effect. UV light can damage plants, causing leaves to burn. Growers often use supplemental light to optimize plant growth.

Red Light

Red lights from 2000K to 3000K and 640-680 nanometers are most important in the flowering stage. This range of light promotes stem growth and overall plant height because red light signals that there are no other plants above it so it can grow unimpeded. They also encourage fruit and chlorophyll production, so they can be used to extend the light cycle of long-day plants and vice-versa for short-day plants.

Blue Light

Blue lights with a Kelvin color temperature from 5000K to 6500K or wavelength in the 400-500 nanometer range are best for the vegetative stage of the grow cycle and for starting seeds indoors. This color range light is responsible for leaf growth and stimulates the production of secondary pigments in the leaves that can enhance the plant’s color and fragrance. Be careful when using blue light LEDs though because too much blue light may stunt the growth of certain species. These lights are particularly good for lettuce and other crops where a short, dense growth is desired.

Yellow Light

Plants make the least use of yellow light, but they do use it as well. Give them some, but they won’t need much.

Green Light

Plants appear green, because chlorophyll does not absorb much green light, like it does other colors, and instead reflects it back at us. Based on this, it is easy to assume that plants do not make use of green light for photosynthesis.In fact, plants have other photoreceptors that are responsible for photosynthesis, besides chlorophyll. And those other photoreceptors do absorb green light. If your plants get no green light at all, they would not be able to reach their full potential.

Even more importantly, green light penetrates deeper into the plants than other colors, so it reaches photoreceptors that other colors can’t. Plants may not need nearly as much green light as they do red and blue, but they do need to have some. The action spectrum for photosynthesis proves this. Make sure you provide it for them.

Knowing that different colors of light can affect what a plant does is important in a world that depends on plants for food. Advanced LED technology is now making it possible to control the kinds of colored light we provide plants in controlled environments.

We can now design lighting to encourage flowering or to produce higher fruit yields for example. Many plant functions can be enhanced and promoted just by knowing what light colors they react and respond to.

Recommended grow lights

ECO FARM 240W LM301B/LM301H QUANTUM BOARD

Eco Farm Commercial Indoor 240 watt quantum board LED grow light uses our custom designed full-spectrum high efficiency white light quantum boards with Samsung LM301B/LM301H and Deep Red LED 660nm and Far Red 730nm and UV 395nm with 120 watts 240 watts 480 watts to choose

GAVITA PRO 1700E GEN2 LED GROW LIGHT

The Gavita pro 1700e gen2 led grow light can be used in commercial grows (horizontal and vertical), greenhouses, home grows (rooms and tents) or in climate rooms. The thin 2.3" profile is also ideal for low rooms or over benches. Boasting an incredible 2.6 umol/J and a light output of 1700 umol/s the Pro 1700 LED provides high-intensity full spectrum light over its entire 4'x4' to 5'x5' flowering footprint. The wide 8-bar form factor helps to provide even coverage across your canopy. This fixture is passively cooled and is built with high-quality 120-277V Philips Advance LED Drivers for optimum performance.

SPIDER FARMER LED QUANTUM BOARD WITH SAMSUNG CHIPS LM301B & DIMMABLE MEANWELL DRIVER

This spider farmer sf 1000 for sale utilize sudtomized dimming design, upgraded SF series growing lights have a dimming knob and light switch. A single light can be adjusted the light intensity at liberty. Multi-light Connection with unified dimming especially beneficial for large area of indoor growing and commercial planting.Excellent full spectrum- white, blue, red and IR (3000K, 5000K, 660nm and IR 760nm). 3000K diodes providing more reddish light and the 5000K providing more blueish. The 660nm red and IR light is especially useful during bloom, where it speeds up flowering time and boost yields. Turn your seeds into your own supply. And the light looks fairly natural , so it's good for accurately monitoring plant health.

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