Growing Microgreens With Grow Lights

Microgreens are an easy and rewarding crop to grow indoors. They’re ready to eat just a week or two after sowing.

Microgreens Light Requirements

Microgreens are flexible in their light requirements. More light will give faster growth but they also do fine in lower light.

Microgreens plants will thrive under lights that provide:

6

18

 DLI 

DLI (Daily Light Integral) is how we measure amounts of “plant-useful” light. Once we know a plant’s DLI needs we can match it to the ideal grow light setup.

Day Length for Microgreens

Microgreens are flexible in their light requirements. More light will give faster growth but they also do fine in lower light.

Microgreens plants do best with a lights on for:

12

16

 hours 

Best Grow Lights for Microgreens

Microgreens have particular grow light needs. They need a low-ish intensity light that covers a large area evenly. 8-10 DLI is a pretty good level of light for microgreens. We recommend:

  1. The GE 24″ Balanced LED Fixture. Suspend the light about 11 inches above your microgreens and run it for 14 hours a day. This will give nice even light to an area 12 inches wide and 24 inches long. The perfect size for a standard “1020” growing tray.

  2. The GE PAR38 Balanced Bulb. Hang the bulb about 2 feet above your microgreens. This will give a nice even circle of light 14 inches across.

Microgreens, like other leafy plants, will thrive under a balanced full-spectrum light.

Balanced full-spectrum lights provide roughly equal amount of red and blue wavelengths while still appearing white to our eyes.

High Output fluorescent or LED grow lights will both work well for growing Microgreens.

Temperature for Microgreens

If you’re growing microgreens in a cooler space you might need a heating mat to help your seeds sprout.

Growth: 

65

 – 

75

°F 

Size of Microgreens Plants

Microgreens grow only a couple of inches tall. They grow best in shallow trays — just an inch or two of growing medium is all they need to reach harvest size.
Typically grows 2

3

” tall

Microgreens Varieties

Virtually any leafy green or herb can be grown as a microgreen. Harvesting they’re tiny seedlings when the flavour and nutrients are at peak.
  • Arugula
  • Bok Choy
  • Beets

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