Garlic Harvest Time? Here’s How to Know. The best time to harvest garlic is when the bottom leaves have started to brown, but the top 4–6 leaves are still green. Wait too long and bulbs can split or rot. Harvest too early and they’ll be small and won’t store well. Not sure? Pull one and check! Comment GARLIC and I’ll send you my garlic growing resources—how to grow, how to spot witches’ broom garlic (a common issue!), and my favorite way to preserve your harvest. #GarlicHarvest #GrowingGarlic #D