Growing Hot Peppers With Grow Lights

Hot peppers come in all kinds of varieties. Heat levels range from mildly spicy to insanely hot.
Hot peppers are grown quite easily under lights. They have a long growing season and high light demands — so indoor growing is preferable to outdoors in many climates.

Hot Peppers Light Requirements

Hot Pepper plants will thrive under lights that provide:

20

30

 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 Hot Peppers

Hot Pepper plants do best with a lights on for:

14

20

 hours 

Best Grow Lights for Hot Peppers

16 hours of light is a pretty good target for hot peppers — particularly if they’re in your living space and you like to sleep.

You’ll need a fairly powerful light to provide 20-30 DLI in a 16 hour period. The Bright Grow recommendation is the GE 24″ LED Fruit & Flower Fixture. Hang the light just three or four inches above your leaves — raising it to stay just at that distance as the plant grows. This will give an optimal amount of light directly under the footprint of the lamp.
Hot Peppers, like all fruiting plants, will grow best under a light that's heavy on the red parts of the spectrum. A "fruit and flower" LED grow light is a good choice for growing Hot Peppers. High output fluorescent bulbs can work too but they generally provide less of the important red wavelengths.

Temperature for Hot Peppers

Hot Peppers produce well even at high temperatures.

Germination: 

80

°F 

Growth: 

65

 – 

90

°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 Hot Pepper Plants

Typically grows 18

36

” tall

Does well in 10

12

” diameter containers

Hot Pepper Varieties

  • Serrano
  • Cayenne
  • Jalapeño

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