Growing Arugula With Grow Lights

Arugula is a resilient and fast growing green. It develops a spicy flavour as the leaves grow larger. The spicy leaves are great in salads or as a pizza topping.
Arugula is well suited to growing indoors under lights — it’s fast growing and doesn’t need much space.

Arugula Light Requirements

Arugula plants will thrive under lights that provide:

12

16

 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 Arugula

Arugula plants do best with a lights on for:

10

12

 hours 

Best Grow Lights for Arugula

It takes a moderately powerful light to provide 12-16 DLI in a 12 hour period. The Bright Grow recommendations are:
  1. GE PAR38 balanced grow bulb. Hang the bulb 18 inches above the plant’s leaves. This will give you a circle of light 10 inches across that’s just the right amount of bright.
  2. The GE 24″ LED Fixture is also a decent bet. Hang the fixture just 5 inches above the plant’s leaf canopy. This will give a strip of optimal light 5 inches wide the length of the fixture.

Arugula, 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 Arugula.

Temperature for Arugula

Arugula is a cool-loving plant. It will grow more slowly in warmer temperatures. Too much warmth though and it will flower and go to seed — spoiling the leaves.

If you’re growing in a warmer space you can try a heat-tolerant variety like Astro or a wild Arugula

Germination: 

40

 – 

55

°F 

Growth: 

50

 – 

65

°F 

Many plants germinate at lower temperatures and prefer more warmth for their growth. This is how plants have evolved — sprouting early in the spring when the days are cool and growing and producing as the days get longer and warmer.

Size of Arugula Plants

Typically grows 6

10

” tall

Does well in 6

8

” diameter containers

Arugula Varieties

Wild Arugula is a cousin of true Arugula — it has very similar flavour though and better heat-tolerance.
  • Astro
  • Wild Arugula (Diplotaxis tenuifolia)
  • Esmee

Arugula Tips

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