When determining the best planting dates in the spring for seeds, the date of the last spring frost is important to your success. NOTE: Our chart calculates U.S. frost dates only, based on historical data. Other factors can also influence planting dates, including soil temperature, altitude and slope of land, nearby waters, and day length. Keep records of your garden's conditions each year to plan more accurately.
- Seeds for plants with a long growing season should be started indoors during the periods shown below.
- Seeds for plants sown in the ground should be planted during the periods shown.
- When no dates appear in the chart, that starting method is not recommended for the particular vegetable.
- To start transplants, see our Best Dates to Transplant (by region).
Planting by the Moon?
Above-ground crops are planted during the light of the Moon (new to full); below-ground crops are planted during the dark of the Moon (from the day after it is full to the day before it is new again). Planting is done in the daytime; planting at night is optional!
This chart includes the most popular crops. For more information, consult your cooperative extension.
Click on the underlined crops below for free "how to" plant and grow guides!
50% probability of frost free after May 13 (at KEENE, NH climate station).
|Crop||Start Seeds Indoors||Moon-favorable Dates||Set Out Plants/|
Start Seeds Outdoors
|Beans||May 20-Jun 10||May 28-Jun 10|
|Beets||Apr 29-May 20||May 15-20|
|Broccoli||Apr 1-15||Apr 1-15||Apr 22-May 13||Apr 29-May 13|
|Brussels sprouts||Apr 1-15||Apr 1-15||Apr 15-May 6||Apr 15, Apr 30-May 6|
|Cabbage||Mar 18-Apr 1||Mar 30-Apr 1||Apr 15-29||Apr 15|
|Carrots||Apr 8-22||Apr 16-22|
|Cauliflower||Apr 1-15||Apr 1-15||Apr 15-29||Apr 15|
|Celery||Mar 3-18||Mar 3-16||May 20-Jun 3||May 28-Jun 3|
|Collards||Apr 1-15||Apr 1-15||Apr 15-May 6||Apr 15, Apr 30-May 6|
|Corn||May 13-27||May 13-14|
|Cucumbers||Apr 15-22||Apr 15||May 27-Jun 17||May 28-Jun 13|
|Eggplant||Mar 3-18||Mar 3-16||May 27-Jun 17||May 28-Jun 13|
|Kale||Apr 1-15||Apr 1-15||Apr 15-May 6||Apr 15, Apr 30-May 6|
|Kohlrabi||Apr 15-May 6||Apr 15, Apr 30-May 6|
|Leeks||Mar 3-18||Mar 3-16||Apr 15-May 6||Apr 15, Apr 30-May 6|
|Lettuce||Apr 1-15||Apr 1-15||Apr 29-May 27||Apr 29-May 14|
|Melons||Apr 15-22||Apr 15||May 27-Jun 17||May 28-Jun 13|
|Okra||May 27-Jun 10||May 28-Jun 10|
|Onion sets||Apr 15-May 6||Apr 16-28|
|Parsnips||Apr 22-May 13||Apr 22-28|
|Peas||Apr 1-22||Apr 1-15|
|Peppers||Mar 3-18||Mar 3-16||May 27-Jun 17||May 28-Jun 13|
|Potato tubers||May 6-27||May 15-27|
|Pumpkins||Apr 15-29||Apr 15||May 27-Jun 17||May 28-Jun 13|
|Radishes||Mar 18-Apr 8||Mar 18-29|
|Spinach||Apr 1-22||Apr 1-15|
|Squash||Apr 15-29||Apr 15||May 27-Jun 17||May 28-Jun 13|
|Sweet Potatoes||Apr 15-22||Apr 16-22||May 27-Jun 17||May 27, Jun 14-17|
|Swiss Chard||Apr 1-15||Apr 1-15||Apr 22-29||Apr 29|
|Tomatoes||Mar 18-Apr 1||Mar 30-Apr 1||May 20-Jun 10||May 28-Jun 10|
|Turnips||Apr 15-May 6||Apr 16-28|
|Watermelon||Apr 15-22||Apr 15||May 27-Jun 17||May 28-Jun 13|