September Planting Guide: 9 Crops to Sow for a Bountiful Fall & Winter Harvest

As summer’s heat begins to fade and the first crisp whispers of autumn arrive, gardeners everywhere face a critical question: What should I plant now? The answer? September is one of the best months to sow crops that thrive in cooler weather, extend your harvest into winter, and even set the stage for early spring bounty. Whether you're a market farmer looking to diversify your late-season offerings or a home gardener eager to keep fresh greens on the table, this guide will walk you through 9 resilient crops to plant in September—plus expert tips on timing, protection, and maximizing yields.

From quick-growing Asian greens that mature in under 30 days to slow-but-worth-it garlic that rewards patience with flavor-packed bulbs, these crops are chosen for their cold-hardiness, market value, and ease of growth. We’ll also cover real-world strategies from commercial growers, DIY protection methods for frost-prone areas, and how to turn your fall garden into a year-round food source. By the end, you’ll have a customized September planting plan tailored to your climate—and a fridge stocked with fresh produce long after the first frost.

Why does September planting matter? For starters, cooler temperatures reduce pest pressure, soil moisture stays more consistent, and many crops actually taste sweeter after a light frost. Plus, with the right varieties and protection, you can harvest fresh greens in December or even overwinter roots for early spring picking. Whether you’re in USDA Zone 5 or Zone 9, there’s a September crop for you.

Let’s dig in—literally.