USDA Hardiness Zone 3B • Midwest • 118 Day Growing Season
| Plant | Start Seeds Indoors | Transplant Outdoors | Direct Sow | First Harvest |
|---|---|---|---|---|
| Acorn Squash | Early to late May | Early June | Late May through early June ★ | Mid August through mid September |
| Ageratum | Early to late April | Early June through early July ★ | — | Early August through mid September |
| Anaheim Pepper | Early to late April ★ | Early to mid June | — | Mid August through mid September |
| Arugula | Early to late April | Early May through mid June | Late April through late July | Early June through late September |
| Asparagus | — | Mid to late May ★ | — | Mid May through late September |
| Banana Peppers | Early to late April ★ | Early to late June | — | Mid August through mid September |
| Basil | Mid April through early May | Early June through mid July | Early June through early August | Early July through mid September |
| Bay Laurel | Early to late March | Early June ★ | — | Early June through late September |
| Beefsteak Tomatoes | Mid April through early May ★ | Early June | — | Late August through mid September |
| Beet | — | Late April through mid May | Early May through early July ★ | Late June through late September |
| Bell Peppers | Early to late April ★ | Early to late June | — | Mid August through mid September |
| Better Boy Tomato | Mid April through early May ★ | Early to late June | — | Mid August through mid September |
| Black-Eyed Susan | Mid March through early April | Mid May through early June ★ | Mid May through mid June | Early August through late September |
| Blackberry | — | Mid May through mid June ★ | — | Mid July through early September |
| Blueberry | — | Mid May through early June ★ | — | Mid August through late September |
| Bok Choy | Mid April through early May | Mid May through early July | Early May through mid July | Mid June through late September |
| Borage | — | Early May through early June | Mid May through early July ★ | Mid July through late September |
| Brandywine Tomatoes | Mid to late April ★ | Early June | — | Early to mid September |
| Broccoli | Mid March through early April ★ | Early May through early June | — | Early July through late August |
| Brussels Sprouts | Early to late April ★ | Mid May through early June | — | Mid August through late September |
| Butternut Squash | Early to late May | Early June | — | Mid September |
| Cabbage | Mid March through early April ★ | Early May through early June | — | Mid July through early September |
| Calendula | Mid March through early April | Early May through mid June | Early May through mid July | Mid June through late September |
| Cantaloupe | Early to late May | Early to mid June | Early to mid June ★ | Late August through mid September |
| Carrot | — | Early May through early June | Early May through late June ★ | Mid July through late September |
| Cauliflower | Mid March through early April ★ | Early May through early June | — | Mid July through early September |
| Cayenne Peppers | Early to late April ★ | Early to late June | — | Mid August through mid September |
| Celebrity Tomato | Mid April through early May ★ | Early to late June | — | Mid August through mid September |
| Celery | Early to late March ★ | Mid May through early June | — | Mid August through late September |
| Chamomile | Mid March through early April | Early May through early June | Early May through early July | Early July through late September |
| Cherry Tomatoes | Mid April through early May ★ | Early June through early July | — | Early August through mid September |
| Chives | Early to late March | Early May through early June | Late April through mid June | Mid July through late September |
| Chrysanthemum | Mid March through early April | Mid May through mid June ★ | — | Late July through mid September |
| Cilantro | Mid April through early May | Mid May through early July | Early May through mid July | Mid June through late September |
| Collard Greens | Mid April through early May | Mid May through mid June | Early May through mid June | Mid July through late September |
| Corn | — | Early to mid June | Late May through mid June ★ | Early August through mid September |
| Cosmos | Late April through mid May | Early June through mid July | Mid May through mid July ★ | Early July through mid September |
| Cubanelle Pepper | Early to late April ★ | Early to late June | — | Mid August through mid September |
| Cucumber | Early to late May | Early June through early July | Late May through early July ★ | Late July through mid September |
| Dill | Late April through mid May | Late May through early July | Mid May through late July | Late June through late September |
| Early Girl Tomato | Mid April through early May ★ | Early June through mid July | — | Late July through mid September |
| Echinacea | Mid March through early April | Mid May through early June ★ | Mid May through early June | Mid August through late September |
| Eggplant | Early to late April ★ | Early to late June | — | Mid August through mid September |
| Fennel | — | Mid May through mid June | Mid May through late June ★ | Late July through late September |
| Feverfew | Mid March through early April | Mid May through early June | Mid May through late June | Late July through late September |
| French Marigold | Mid April through early May | Early June through mid July | Mid May through mid July | Early July through mid September |
| Garlic | — | Mid August through early September | — | Early April through late May |
| Geranium | Early to late March | Early to late June ★ | — | Mid August through mid September |
| Ghost Pepper | Mid March through early April ★ | Early to mid June | — | Early October through mid September |
| Grape Tomatoes | Mid April through early May ★ | Early June through early July | — | Early August through mid September |
| Green Beans | — | Late May through late June | Late May through early July ★ | Late July through mid September |
| Green Onions | — | Late April through mid May | Late April through early July ★ | Late June through late September |
| Green Zebra Tomato | Mid April through early May ★ | Early to mid June | — | Mid August through mid September |
| Habanero Peppers | Late March through mid April ★ | Early to mid June | — | Early to mid September |
| Heirloom Tomatoes | Mid April through early May ★ | Early to mid June | — | Late August through mid September |
| Iceberg Lettuce | Early to late April | Early May through early June | Late April through late June | Early July through late September |
| Jalapeño Peppers | Early to late April ★ | Early to mid June | — | Mid August through mid September |
| Kale | Early to late April | Early May through early June | Late April through early July | Mid June through late September |
| Lavender | Mid March through early April | Early June ★ | — | Early to late September |
| Lemon Balm | Early to late April | Mid May through mid June | Mid May through late June | Late July through late September |
| Lettuce | Early to late April | Early May through mid June | Late April through mid July | Early June through late September |
| Lobelia | Mid March through early April | Early to late June ★ | — | Early August through mid September |
| Mint | Mid March through early April | Mid May through mid June ★ | — | Mid July through early September |
| Mustard Greens | Early to late April | Early May through mid June | Late April through mid July | Early June through late September |
| Nasturtium | Late April through mid May | Late May through late June | Late May through early July ★ | Late July through mid September |
| Onion | Mid February through mid March | Early to late May | Late April through late May | Late July through late September |
| Oregano | Mid March through early April | Mid May through early July ★ | Mid May through mid July | Early July through late September |
| Parsley | Early to late March | Early May through early June | Early May through late June | Mid July through late September |
| Peas | — | Late April through mid May | Early April through early July ★ | Early June through late September |
| Pepper | Early to late April ★ | Early to late June | — | Early August through mid September |
| Pepperoncini | Early to late April ★ | Early to late June | — | Mid August through mid September |
| Petunia | Mid March through early April | Early June through early July ★ | — | Early August through mid September |
| Poblano Peppers | Early to late April ★ | Early to mid June | — | Late August through mid September |
| Potato | — | Early to late May | Early May through early June ★ | Early August through late September |
| Pumpkin | Early to late May | Early June | — | Mid September |
| Radish | — | Late April through early June | Late April through early August ★ | Mid May through late September |
| Raspberry | — | Mid May through mid June ★ | — | Mid July through early September |
| Roma Tomatoes | Mid April through early May ★ | Early to mid June | — | Mid August through mid September |
| Romaine Lettuce | Early to late April | Early May through early June | Late April through late June | Late June through late September |
| Rosemary | Early to mid March | Early June ★ | — | Early to late September |
| Sage | Early to late April | Mid May through mid June ★ | Mid May through mid June | Early August through late September |
| San Marzano Tomatoes | Mid April through early May ★ | Early to mid June | — | Late August through mid September |
| Serrano Peppers | Early to late April ★ | Early to mid June | — | Late August through mid September |
| Shishito Pepper | Early to late April ★ | Early June through early July | — | Early August through mid September |
| Snap Peas | — | Late April through mid May | Early April through early July ★ | Early June through late September |
| Snow Peas | — | Late April through mid May | Early April through early July ★ | Early June through late September |
| Spaghetti Squash | Early to late May | Early June | Late May ★ | Late August through mid September |
| Spinach | Mid March through early April | Late April through early June | Early April through late July | Mid May through late September |
| Squash | Early to late May | Early June | Late May through early June ★ | Mid August through mid September |
| Strawberry | — | Early to late May ★ | — | Early August through mid September |
| Sun Gold Tomato | Mid April through early May ★ | Early June through early July | — | Late July through mid September |
| Sunflower | Late April through mid May | Late May through mid June | Mid May through mid June ★ | Early August through mid September |
| Sweet Alyssum | Mid March through early April | Early May through mid June | Early May through mid July | Mid June through late September |
| Sweet Peppers | Early to late April ★ | Early to late June | — | Early August through mid September |
| Sweet Potato | Early to late April | Early to mid June ★ | — | Mid September |
| Swiss Chard | Mid April through early May | Mid May through mid June | Early May through early July | Late June through late September |
| Tansy | Mid March through early April | Early May through early June | Early May through mid June | Mid July through late September |
| Thai Chili | Early to late April ★ | Early to mid June | — | Late August through mid September |
| Thyme | Mid March through early April | Mid May through mid June ★ | Mid May through late June | Late July through late September |
| Tomato | Mid April through early May ★ | Early to late June | — | Mid August through mid September |
| Watermelon | Early to late May | Early June | Early June ★ | Late August through mid September |
| Yarrow | Early to late March | Early May through early June ★ | Mid May through late June | Late July through late September |
| Yellow Squash | Early to late May | Early June through mid July | Late May through mid July ★ | Mid July through mid September |
| Zinnia | Late April through mid May | Early June through early July | Late May through early July | Late July through mid September |
| Zucchini | Early to late May | Early June through mid July | Late May through mid July ★ | Mid July through mid September |