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 March 27 (at TULSA INTL AP, OK climate station).
|Crop||Start Seeds Indoors||Moon-favorable Dates||Set Out Plants/|
Start Seeds Outdoors
|Beans||Apr 3-24||Apr 3-15|
|Beets||Mar 13-Apr 3||Mar 17-29|
|Broccoli||Feb 12-26||Feb 12-14||Mar 5-27||Mar 5-16|
|Brussels sprouts||Feb 12-26||Feb 12-14||Feb 26-Mar 20||Mar 1-16|
|Cabbage||Jan 29-Feb 12||Jan 30-Feb 12||Feb 26-Mar 13||Mar 1-13|
|Carrots||Feb 19-Mar 5||Feb 19-28|
|Cauliflower||Feb 12-26||Feb 12-14||Feb 26-Mar 13||Mar 1-13|
|Celery||Jan 15-29||Jan 15||Apr 3-17||Apr 3-15|
|Collards||Feb 12-26||Feb 12-14||Feb 26-Mar 20||Mar 1-16|
|Corn||Mar 27-Apr 10||Mar 30-Apr 10|
|Cucumbers||Feb 26-Mar 5||Mar 1- 5||Apr 10-May 1||Apr 10-15, Apr 29-May 1|
|Eggplant||Jan 15-29||Jan 15||Apr 10-May 1||Apr 10-15, Apr 29-May 1|
|Kale||Feb 12-26||Feb 12-14||Feb 26-Mar 20||Mar 1-16|
|Kohlrabi||Feb 26-Mar 20||Mar 1-16|
|Leeks||Jan 15-29||Jan 15||Feb 26-Mar 20||Mar 1-16|
|Lettuce||Feb 12-26||Feb 12-14||Mar 13-Apr 10||Mar 13-16, Mar 30-Apr 10|
|Melons||Feb 26-Mar 5||Mar 1- 5||Apr 10-May 1||Apr 10-15, Apr 29-May 1|
|Okra||Apr 10-24||Apr 10-15|
|Onion sets||Feb 26-Mar 20||Feb 26-28, Mar 17-20|
|Parsnips||Mar 5-27||Mar 17-27|
|Peas||Feb 12-Mar 5||Feb 12-14, Mar 1- 5|
|Peppers||Jan 15-29||Jan 15||Apr 10-May 1||Apr 10-15, Apr 29-May 1|
|Potato tubers||Mar 20-Apr 10||Mar 20-29|
|Pumpkins||Feb 26-Mar 13||Mar 1-13||Apr 10-May 1||Apr 10-15, Apr 29-May 1|
|Radishes||Jan 29-Feb 19||Jan 29, Feb 15-19|
|Spinach||Feb 12-Mar 5||Feb 12-14, Mar 1- 5|
|Squash||Feb 26-Mar 13||Mar 1-13||Apr 10-May 1||Apr 10-15, Apr 29-May 1|
|Sweet Potatoes||Feb 26-Mar 5||Feb 26-28||Apr 10-May 1||Apr 16-28|
|Swiss Chard||Feb 12-26||Feb 12-14||Mar 5-13||Mar 5-13|
|Tomatoes||Jan 29-Feb 12||Jan 30-Feb 12||Apr 3-24||Apr 3-15|
|Turnips||Feb 26-Mar 20||Feb 26-28, Mar 17-20|
|Watermelon||Feb 26-Mar 5||Mar 1- 5||Apr 10-May 1||Apr 10-15, Apr 29-May 1|