Garlic needs a cold period in order to reach maturity. In This Article When to Plant Garlic Planting Garlic Too Early Planting Garlic Too Late Tips for Planting Garlic Caring for Garlic Knowing the right time to plant garlic is key to a successful harvest. While this root crop depends on cooler temperatures to grow and thrive, the ideal planting time will depend on your gardening zone. For example, the best time to plant garlic in zone 7 is typically in mid-October, while gardeners in zone 10...