Planting Calendar for Rupert, ID

30% probability of frost free after May 20 (at RUPERT 3 WSW, ID climate station).
Crop Based on Frost Dates   Based on Moon Dates
Start Seeds IndoorsTransplant SeedlingsStart Seeds Outdoors
Beans May 27-Jun 17
Jun 3-17
Beets May 6-27
May 19-27
Broccoli Apr 8-22
Apr 8-19
Apr 29-May 20
May 4-18
Brussels Sprouts Apr 8-22
Apr 8-19
Apr 22-May 13
May 4-13
Cabbage Mar 25-Apr 8
Apr 5- 8
Apr 22-May 6
May 4- 6
Cantaloupe Apr 22-29
Jun 3-24
Jun 3-17
Carrots Apr 15-29
Apr 20-29
Cauliflower Apr 8-22
Apr 8-19
Apr 22-May 6
May 4- 6
Celery Mar 11-25
Mar 11-20
May 27-Jun 10
Jun 3-10
Collards Apr 8-22
Apr 8-19
Apr 22-May 13
May 4-13
Corn May 20-Jun 3
Jun 3
Cucumbers Apr 22-29
Jun 3-24
Jun 3-17
Eggplants Mar 11-25
Mar 11-20
Jun 3-24
Jun 3-17
Kale Apr 8-22
Apr 8-19
Apr 22-May 13
May 4-13
Kohlrabi Apr 22-May 13
May 4-13
Leeks Mar 11-25
Mar 11-20
Apr 22-May 13
May 4-13
Lettuce Apr 8-22
Apr 8-19
May 6-Jun 3
May 6-18, Jun 3
Okra Jun 3-17
Jun 3-17
Onions Apr 22-May 13
Apr 22-May 3
Parsnips Apr 29-May 20
Apr 29-May 3, May 19-20
Peas Apr 8-29
Apr 8-19
Peppers Mar 11-25
Mar 11-20
Jun 3-24
Jun 3-17
Potatoes May 13-Jun 3
May 19-Jun 2
Pumpkins Apr 22-May 6
May 4- 6
Jun 3-24
Jun 3-17
Radishes Mar 25-Apr 15
Mar 25-Apr 4
Spinach Apr 8-29
Apr 8-19
Squash Apr 22-May 6
May 4- 6
Jun 3-24
Jun 3-17
Sweet Potatoes Apr 22-29
Apr 22-29
Jun 3-24
Jun 18-24
Swiss Chard Apr 8-22
Apr 8-19
Apr 29-May 6
May 4- 6
Tomatoes Mar 25-Apr 8
Apr 5- 8
May 27-Jun 17
Jun 3-17
Turnips Apr 22-May 13
Apr 22-May 3
Watermelons Apr 22-29
Jun 3-24
Jun 3-17

Find the best dates for planting vegetables and fruit in your garden! Our free planting calendar calculates the best time to start seeds indoors and outdoors, as well as when to plant young plants outside.

How to Use the Planting Calendar

Simply put, a planting calendar is a guide that tells you the best time to start planting your garden. Most planting calendars are based on frost dates, which dictate when you should start seeds and when it's safe to plant outdoors in your area. Our planting calendar is customized to your location in order to give you the most accurate information possible.

On the planting calendar below, please note:

  • The Frost Dates indicate the best planting dates based on your local average frost dates. Average frost dates are based on historical weather data and are the planting guideline used by most gardeners.
  • The Moon Dates indicate the best planting dates based on your local frost dates and Moon phases. Planting by the Moon is considered a more traditional technique.
  • The Transplant Seedlings dates indicate the best time to plant young plants outdoors. This includes plants grown from seed at home and plants bought from a nursery. Although frost dates are a good way to know approximately when to start gardening, always check a local forecast before planting outdoors!
  • When no dates appear in the chart, that starting method is not recommended for that particular plant. Some crops do best when started outdoors rather than indoors, while others prefer the opposite.
  • Click on the name of a plant to see our corresponding Growing Guide.

To plan your garden more accurately in the future, keep a record of your garden's conditions each year, including frost dates and seed-starting dates!