Here are the specific USDA zones for gardening zucchini: Zones 3-6: In these cooler regions, it's best to start zucchini indoors about 4-6 weeks before the last expected frost date in spring. Then, transplant seedlings into the garden when the soil has warmed up, and there is no longer any danger of frost. Zucchini typically requires a minimum soil temperature of 60°F (16°C) to germinate. Zones 7-10: Zucchini prefers warm soil temperatures of at least 70°F (21°C) for optimal growth and fruit. It's important to note that even within a single USDA zone, there can be microclimates that affect plant growth and productivity. It's always a good idea to observe your specific growing conditions and adjust your planting and care practices accordingly.