Zone 4 planting calendar
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Average last spring frost ≈ May 10, first fall frost ≈ Sep 25 - about 138 frost-free days.
| Crop | Start indoors | Plant out / sow |
|---|---|---|
| Tomatoes | Mar 22 – Apr 5 | May 24 – Jun 14 |
| Peppers | Mar 8 – Mar 22 | May 31 – Jun 21 |
| Eggplant | Mar 8 – Mar 22 | May 31 – Jun 21 |
| Cucumbers | – | May 17 – Jun 7 |
| Zucchini | – | May 17 – Jun 7 |
| Pumpkins | – | May 24 – Jun 14 |
| Winter Squash | – | May 24 – Jun 14 |
| Watermelon | – | May 24 – Jun 14 |
| Cantaloupe | – | May 24 – Jun 14 |
| Green Beans | – | May 17 – Jun 7 |
| Sweet Corn | – | May 17 – Jun 7 |
| Okra | – | May 31 – Jun 21 |
| Lettuce | Mar 29 – Apr 12 | Apr 19 – May 10 |
| Spinach | – | Apr 5 – Apr 26 |
| Kale | Mar 29 – Apr 12 | Apr 12 – May 3 |
| Broccoli | Mar 22 – Apr 5 | Apr 26 – May 17 |
| Cabbage | Mar 22 – Apr 5 | Apr 19 – May 10 |
| Cauliflower | Mar 29 – Apr 12 | May 3 – May 24 |
| Brussels Sprouts | Mar 29 – Apr 12 | Apr 26 – May 17 |
| Carrots | – | Apr 19 – May 10 |
| Beets | – | Apr 19 – May 10 |
| Radishes | – | Apr 5 – Apr 26 |
| Peas | – | Mar 29 – Apr 19 |
| Onions | Mar 1 – Mar 15 | Apr 12 – May 3 |
| Garlic | – | – |
| Potatoes | – | Apr 26 – May 17 |
| Sweet Potatoes | – | May 31 – Jun 21 |
| Swiss Chard | – | Apr 26 – May 17 |
| Arugula | – | Apr 12 – May 3 |
| Basil | Mar 29 – Apr 12 | May 24 – Jun 14 |
| Cilantro | – | Apr 26 – May 17 |
| Parsley | Mar 15 – Mar 29 | Apr 26 – May 17 |
| Celery | Feb 22 – Mar 8 | May 17 – Jun 7 |
| Leeks | Mar 1 – Mar 15 | Apr 26 – May 17 |
| Asparagus | – | Apr 12 – May 3 |
| Strawberries | – | Apr 19 – May 10 |
| Sunflowers | – | May 17 – Jun 7 |
| Turnips | – | Apr 19 – May 10 |
Other zones
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