For seedlings, LED grow lights should generally be mounted between 24-36 inches above the plant canopy – however, this depends on the power (wattage) of the light source.
Are LED lights good for growing seedlings?
LED plant lights use less energy and emit less heat than compact fluorescent lights, reducing costs and simplifying temperature control in enclosed environments. Go with full-spectrum LEDs (which don’t look purple) for growing seedlings, propagating plants, and perking up houseplants in winter.
How long should grow lights be on for seedlings?
Keep the lights as close to the seedlings as possible without touching them (2 to 3 inches). When seedlings first appear, keep the lights turned on for 12 to 16 hours per day. To reduce your hands-on time, use a timer to turn the lights on and off automatically.
What color LED lights for seedlings?
Although plants use the full spectrum for photosynthesis, red and blue light seem to be most critical. Red light stimulates vegetative growth and flowering (but if a plant gets too much, it will become tall and spindly).
Can seedlings get too much light?
Plants cannot get too much light, but they can get too much of the heat energy that comes with the light. Photosynthesis and other plant growth processes will shut down when the environmental and tissue temperature gets high enough that all the water taken up by the plant is used to cool the plant tissue.
Should seedlings get 24 hours of light?
Yes, it is true that your seedlings need lots of bright light to grow healthy and strong—but they also need a period of darkness in order to thrive. … These fluorescent lights should be left on for 12 to 16 hours a day. Many people make the mistake of leaving their seedlings under fluorescent lighting 24 hours a day.
How long to leave grow lights on tomato seedlings?
Use two different types of fluorescent bulbs in the fixture; one warm bulb and one cool bulb. You do not need to buy the expensive gro-light bulbs, the combination of warm and cool bulbs is really effective. Keep the lights on the plants for 14-16 hours per day, but turn them off and let them rest at night.
How many watts do I need for seedlings?
In very general terms you need 15 watts per sq foot to grow seedlings.
What color LED for veg stage?
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.
How many lumens do you need for seedlings?
Understanding Lumen and Kelvin numbers is essential for growing healthy seedlings for transplants. Lumens is the brightness or intensity of a bulb. You want a lumen number between 2000 and 3000.
What color should my LED lights be when I sleep?
What LED light color is best for your sleep? A red light color is best for sleep because it has a low color temperature, far lower than regular sunlight. You can be immersed in red light at night without giving your body a jolt and altering your internal clock as blue light does.
How do I know if my seedlings are getting too much light?
If your plant is not getting enough light, the most common sign is the yellowing and dropping of leaves, stunted leaf growth, elongated stems, and a dull-green color. If your plant is getting too much light, then its leaves will have singed tips, burned patches, or will be falling off (yikes!).