When to Plant Vegetables in Boise Air Terminal, ID

Your vegetable planning guide for Boise Air Terminal, ID

On average, you have 159 frost-free growing days beginning May 4 and ending Oct 10.

Keep reading, or jump to the Spring Strategy or the Fall Strategy.

Customized Boise Air Terminal, ID Spring Planting Schedule
Here is a quick overview of when to plant the most popular types of vegetables for your spring garden. Scroll down for the full list.

Cole crops (broccoli, cauliflower, cabbage, lettuce, spinach): Direct seed around March 23 if ground is workable. For better results, start indoors around February 24 and transplant around April 14.

Onions, potatoes, and peas: Plant around March 5. If ground is frozen, plant immediately after thaw.

Tomatoes, peppers, and eggplants: Start indoors around February 24. Transplant around April 30 after last frost.

Warm-season crops (beans, corn, squash, pumpkins, cucumbers, melons, gourds, sunflowers): Direct seed around May 4 when soil temperature reaches 60°F.

Note: This location has a shorter growing season. Start warm-season crops indoors around April 14 and transplant after frost danger passes.

Full Vegetable List
Crop Sow seeds indoors Transplant seedlings into the garden Direct sow seeds
Asparagus n/a Mar 20 - Apr 4 n/a
Beans n/a n/a May 4 - Jun 1
Beets n/a n/a Mar 9 - Mar 23
Broccoli Feb 24 - Mar 9 Apr 6 - Apr 20 n/a
Brussel Sprouts Feb 24 - Mar 9 Apr 6 - Apr 20 n/a
Cabbage Feb 24 - Mar 9 Apr 6 - Apr 20 n/a
Cantaloupe n/a n/a Apr 20 - May 4
Carrots n/a n/a Mar 23 - Apr 20
Cauliflower Feb 24 - Mar 9 Apr 6 - Apr 20 n/a
Chard n/a n/a Mar 23 - Apr 6
Collards Feb 24 - Mar 9 Apr 6 - Apr 20 n/a
Corn n/a n/a May 4 - May 18
Cucumbers n/a n/a May 4 - May 18
Eggplants Feb 24 - Mar 9 May 4 - May 18 n/a
Gourds, Squash and Pumpkins n/a n/a May 4 - May 18
Kale Feb 24 - Mar 9 Apr 6 - Apr 20 n/a
Kohlrabi Feb 24 - Mar 9 Apr 6 - Apr 20 n/a
Lettuce Feb 24 - Mar 9 Mar 23 - Apr 20 Mar 23 - Apr 20
Mustard Feb 24 - Mar 9 Apr 6 - Apr 20 n/a
Okra n/a n/a May 4 - May 18
Onions Feb 17 - Feb 24 Mar 5 - Apr 4 n/a
Peas (English) n/a n/a Mar 5 - Apr 4
Peas (Southern) n/a n/a May 4 - Jun 1
Peas (Sugar Snap) n/a n/a Mar 5 - Apr 4
Peppers Feb 24 - Mar 9 May 4 - May 18 n/a
Potatoes n/a n/a Mar 5 - Apr 4
Radishes n/a n/a Mar 20 - May 18
Spinach Feb 24 - Mar 9 Apr 6 - Apr 20 Mar 20 - Apr 20
Sweet Potatoes n/a May 4 - May 25 n/a
Tomatoes Feb 24 - Mar 9 May 4 - May 18 n/a
Watermelon n/a n/a May 4 - May 18

Customized Boise Air Terminal, ID Fall Planting Schedule
Here is a quick overview of when to plant the most popular types of vegetables for your fall garden. Scroll down for the full list.

Fall planting requires working backward from the first frost date (October 10) to ensure crops mature before winter. Check seed packets for "Days to Harvest" as timing varies by variety.

Tomatoes, peppers, and eggplants: Require approximately 100 days to harvest. Transplant by July 2.

Garlic: Plant around August 26 when soil temperature reaches 60°F at 4-inch depth. Separate cloves and plant 3-4 inches deep. Regional timing varies.

Cole crops (broccoli, cauliflower, cabbage, lettuce, spinach): Direct seed around August 1. Due to summer heat, starting indoors around June 12 and transplanting around July 22 yields better results.

Peas: Direct sow around July 27.

Warm-season crops (beans, corn, squash, pumpkins, cucumbers, melons, gourds, sunflowers): Direct seed around June 27.

Full Vegetable List
Crop Sow seeds indoors Transplant seedlings into the garden Direct sow seeds
Beans n/a n/a Jun 27 - Jul 27
Beets n/a n/a Jul 27 - Sep 10
Broccoli May 16 - Jun 30 Jun 27 - Aug 11 n/a
Brussel Sprouts May 16 - Jun 30 Jun 27 - Aug 11 n/a
Cabbage May 16 - Jun 30 Jun 27 - Aug 11 n/a
Cantaloupe n/a n/a Jun 12 - Jun 27
Carrots n/a n/a Jul 12 - Sep 10
Cauliflower May 16 - Jun 30 Jun 27 - Aug 11 n/a
Chard n/a n/a Jun 27 - Sep 10
Collards Jun 12 - Jul 27 Jul 12 - Aug 26 n/a
Corn n/a n/a Jun 27 - Jul 12
Cucumbers n/a n/a Jun 27 - Jul 12
Eggplants May 1 - May 16 Jun 12 - Jun 27 n/a
Garlic n/a n/a Jul 27 - Sep 10
Gourds, Squash and Pumpkins n/a n/a May 28 - Jun 27
Kale May 16 - Jun 30 Jun 27 - Aug 11 n/a
Kohlrabi May 16 - Jun 30 Jun 27 - Aug 11 n/a
Lettuce Jul 12 - Aug 11 Aug 11 - Sep 10 Aug 11 - Sep 10
Mustard n/a n/a Aug 11 - Sep 10
Okra n/a n/a May 28 - Jun 27
Onions n/a n/a Sep 10 - Sep 20
Parsley May 28 - Jul 12 Jul 12 - Aug 26 n/a
Peas (English) n/a n/a Jul 12 - Aug 11
Peas (Southern) n/a n/a May 28 - Jun 27
Peas (Sugar Snap) n/a n/a Jul 12 - Aug 11
Peppers May 6 - May 21 Jun 17 - Jul 2 n/a
Potatoes n/a n/a Jul 12 - Aug 11
Radishes n/a n/a Aug 11 - Sep 10
Spinach Jun 27 - Aug 11 Jul 27 - Sep 10 Jul 27 - Sep 10
Tomatoes May 6 - May 21 Jun 17 - Jul 2 n/a
Turnips n/a n/a Aug 26 - Sep 25
Watermelon n/a n/a May 28 - Jun 27

How accurate is all this? For nearly all locations, we are confident in the dates. There are, however, some difficult areas of the world that don't match up perfectly with the dates we have given. For that reason, we recommend you use this guide as a very good starting place, but don't interpret the dates as absolutely perfect for every location.

Did you find this useful? Garden.org has a vast array of useful features. May we recommend that you take a look at our excellent food gardening guide?

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