MISTAKE #1: PLANTING IN A SHADED AREA Overview: Except for some parasitic plants, all land plants including garlic, need sunlight to thrive. Garlic grows best when exposed to full sun during the spring and summer daylight hours. If the leaves cannot be fully engaged in the photosynthesis process, garlic plants and bulbs may not be able to reach their full potential. Garlic plants grown in full sunlight produced more biomass, and fuller leaves, and allocated a larger prop