Light Requirements for Garlic to Form Bulbs

November 25, 2018

Garlic needs a specific temperature and photoperiod combination to form harvestable bulbs, which makes it a bit trickier to grow indoors.

PC: Leslie F. Halleck

Garlic is not only photoperiodic, but it also requires vernalization to form bulbs. This is why you must plant garlic cloves in the fall, then harvest the following spring or summer. You may find garlic a tough crop to crack if you try to grow it indoors at consistent temperatures and photoperiods.

Gardening Under Lights Book

Back to top

Tips in your inbox


Sign up for the E-Newsletter for my latest green industry news updates for pros + plant and gardening hobbyists.