Planting Calendar For Boise, ID - The Old Farmer's Almanac

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Boise, ID

See Your Almanac Planting Calendar for 2026

The 2026 gardening calendar shows spring and fall planting dates for vegetables, fruits, and herbs, customized for your zip code or postal code.

Spring Planting Calendar

Our spring planting calendar starts with the earliest dates you can plant, based on your area’s last spring frost. If you’ve missed the first window, don’t worry! We also provide “last planting dates” to help new gardeners see how late they can plant and still enjoy a harvest.

Fall Planting Calendar

Our fall planting calendar focuses on planting in late summer for a fall harvest—think of it as a second summer! Keeping crops going is easy if your soil is already prepared.

Tip: Use frost-based dates for standard planting; moon-based dates are for gardeners who follow planting by the Moon.

Planting Dates for Spring

On average, your last spring frost occurs on April 30 (at BOISE AIR TERMINAL, ID climate station, elevation 2814 feet).

Crop	Based on Frost Dates Based on Moon Dates
	Start Seeds Indoors	Plant Seedlingsor Transplants	Start Seeds Outdoors	Last Date to Plant
Anise Hyssop	Mar 4-19 Mar 18-19	Apr 30-May 28 Apr 30-May 1, May 16-28	N/A
Arugula	Mar 4-19 Mar 18-19	Apr 9-23 Apr 17-23	Apr 2-9	Sep 16
Asparagus	N/A	Apr 9-16 Apr 9-16	N/A	Apr 30
Basil	Mar 19-Apr 2 Mar 19-Apr 1	May 14-28 May 16-28	May 14-28 May 16-28	Sep 2
Beets	N/A	Apr 30	Apr 2-16 Apr 2-16	May 14
Bell Peppers	Feb 18-Mar 4 Feb 18-Mar 3	May 14-21 May 16-21	N/A	Jul 22
Bok Choy	Mar 19-Apr 2 Mar 19-Apr 1	May 14-21 May 16-21	May 14-21 May 16-21	Jun 11
Borage	Mar 19-Apr 2 Mar 19-Apr 1	May 7-14	May 7-14
Broccoli	Mar 19-Apr 2 Mar 19-Apr 1	Apr 16-30 Apr 17-30	N/A	Aug 12
Brussels Sprouts	Mar 19-Apr 2 Mar 19-Apr 1	Apr 16-30 Apr 17-30	N/A	Jul 8
Cabbage	Mar 4-19 Mar 18-19	Apr 9-16	N/A	May 7
Cannabis	Mar 19-Apr 2 Mar 19-Apr 1	May 7-21 May 16-21	May 7-21 May 16-21
Cantaloupes	Mar 19-Apr 2 Mar 19-Apr 1	May 14-21 May 16-21	May 14-21 May 16-21	Jul 8
Carrots	N/A	N/A	Apr 2-16 Apr 2-16	Aug 5
Cauliflower	Mar 19-Apr 2 Mar 19-Apr 1	Apr 23-May 7 Apr 23-May 1	N/A	Jul 29
Celery	Feb 4-18 Feb 17-18	May 7-21 May 16-21	Apr 30 Apr 30	Aug 5
Chamomile	Mar 4-19 Mar 18-19	May 7-14	May 7-21 May 16-21
Chervil	N/A	N/A	Apr 9-16
Chives	Mar 4-19 Mar 18-19	Apr 9-16	Apr 9-16	Aug 19
Cilantro (Coriander)	N/A	N/A	Apr 30-May 14 Apr 30-May 1	May 21
Collards	Mar 4-19 Mar 18-19	Apr 2-9	N/A	Aug 5
Comfrey	Feb 4-18 Feb 17-18	May 7-21 May 16-21	N/A
Cucumbers	Apr 9-16	May 7-21 May 16-21	May 14-21 May 16-21	Aug 5
Dill	N/A	N/A	Apr 23-May 14 Apr 23-May 1	Aug 19
Dry Beans	N/A	N/A	May 14-21 May 16-21	Jul 8
Eggplants	Mar 4-19 Mar 18-19	May 14-21 May 16-21	N/A	Aug 5
Fava Beans	N/A	N/A	Apr 2-9	May 14
Fennel	Mar 19-Apr 2 Mar 19-Apr 1	May 7-14	Apr 30-May 14 Apr 30-May 1	Jul 29
Garlic	N/A	N/A	N/A
Ginger	Feb 18-Mar 4 Feb 18-Mar 3	May 14-28 May 16-28	May 14-28 May 16-28
Green Beans	N/A	N/A	May 7-28 May 16-28	Aug 5
Honeydew Melons	Apr 9-16	May 14-21 May 16-21	May 14-21 May 16-21	Jul 15
Jalapeño Peppers	Feb 18-Mar 4 Feb 18-Mar 3	May 14-21 May 16-21	N/A
Kale	Mar 4-19 Mar 18-19	Apr 16-30 Apr 17-30	Apr 2-9	May 14
Kohlrabi	Mar 4-19 Mar 18-19	Apr 2-16	N/A	May 14
Lavender	Feb 18-Mar 4 Feb 18-Mar 3	May 14-28 May 16-28	N/A
Leeks	Feb 18-Mar 4 Feb 18-Mar 3	Apr 9-23 Apr 17-23	N/A	Jul 1
Lemon Balm	Mar 4-19 Mar 18-19	May 7-14	May 7-14
Lemon Verbena	N/A	May 14-28 May 16-28	N/A
Lettuce	Mar 4-19 Mar 18-19	Apr 2-9	Apr 2-16	May 14
Marjoram	Mar 4-19 Mar 18-19	May 7-14	N/A
Mint	Feb 18-Mar 4 Feb 18-Mar 3	May 7-14	May 7-14
Mustard Greens	Mar 19-Apr 2 Mar 19-Apr 1	Apr 9-16	Apr 9-16
Okra	Apr 2-16	May 14-21 May 16-21	May 14-28 May 16-28	Aug 5
Onions	Feb 18-Mar 4 Mar 4	Apr 2-16 Apr 2-16	Apr 2-16 Apr 2-16	Jul 8
Oregano	Feb 18-Mar 19 Feb 18-Mar 3, Mar 18-19	May 7-21 May 16-21	N/A	Aug 5
Parsley	Feb 18-Mar 4 Feb 18-Mar 3	May 7-21 May 16-21	Apr 2-May 7 Apr 17-May 1	Jul 29
Parsnips	N/A	N/A	Apr 2-9 Apr 2-9	Jul 8
Peanuts	N/A	N/A	May 21-Jun 4 Jun 1-4
Peas	N/A	N/A	Apr 2-9	May 14
Potatoes	N/A	N/A	Apr 2-16 Apr 2-16	Aug 5
Pumpkins	Apr 9-23 Apr 17-23	May 14-21 May 16-21	May 14-21 May 16-21	Jul 1
Radishes	N/A	N/A	Apr 2-9 Apr 2-9	Aug 19
Rosemary	Feb 4-18 Feb 17-18	May 14-21 May 16-21	N/A	Aug 19
Sage	Mar 4-19 Mar 18-19	May 7-21 May 16-21	N/A	Jul 29
Salad Burnet	Mar 4-19 Mar 18-19	May 7-14	Apr 30-May 28 Apr 30-May 1, May 16-28
Salsify	N/A	N/A	Apr 2-16 Apr 2-16	Jul 8
Savory	Mar 4-19 Mar 18-19	May 7-14	N/A
Spinach	Mar 19-Apr 2 Mar 19-Apr 1	Apr 9-16	Apr 2-9	May 14
Sweet Corn	N/A	N/A	May 14-28 May 16-28	Jul 29
Sweet Potatoes	N/A	May 21-28	N/A	Jul 1
Swiss Chard	Mar 19-Apr 2 Mar 19-Apr 1	Apr 16-30 Apr 17-30	Apr 9-30 Apr 17-30	May 14
Tarragon	Mar 4-19 Mar 18-19	May 7-14	N/A
Thyme	Feb 18-Mar 4 Feb 18-Mar 3	May 7-14	N/A	Jul 22
Tomatillos	Mar 19-Apr 2 Mar 19-Apr 1	May 14-28 May 16-28	N/A	Jul 29
Tomatoes	Mar 4-19 Mar 18-19	May 14-21 May 16-21	N/A	Jul 15
Turmeric	Mar 4-Apr 2 Mar 18-Apr 1	May 14-28 May 16-28	May 14-28 May 16-28
Turnips	N/A	N/A	Apr 2-9 Apr 2-9	Sep 16
Watercress	Apr 2-9	May 7-14	Apr 30-May 14 Apr 30-May 1
Watermelons	Apr 9-23 Apr 17-23	May 14-21 May 16-21	May 7-14	Jul 15
Winter Squash	Apr 9-16	May 7-21 May 16-21	May 14-21 May 16-21	Jun 24
Zucchini (Summer Squash)	Apr 9-16	May 7-21 May 16-21	May 14-21 May 16-21	Aug 12

Planting Dates for Fall

On average, your first fall frost occurs on October 14 (at BOISE AIR TERMINAL, ID climate station).

Crop	Based on Frost Dates Based on Moon Dates
	Start Seeds Outdoors	Transplant	Average Days to Maturity	Frost Tolerance
Arugula	Aug 26-Sep 30 Aug 26-27, Sep 10-26	N/A	40	Frost-hardy
Beets	Jul 22-Aug 19 Jul 30-Aug 11	N/A	50	Frost-tolerant
Bok Choy	Aug 5-26 Aug 12-26	N/A	50	Frost-tolerant
Broccoli	Jul 15-22 Jul 15-22	Aug 5-19 Aug 12-19	60	Frost-tolerant
Brussels Sprouts	Jun 24-Jul 8 Jun 24-29	N/A	100	Frost-hardy
Cabbage	N/A	Jul 22-Aug 5 Jul 22-29	90	Frost-tolerant
Carrots	Jul 29-Aug 5 Jul 30-Aug 5	N/A	70	Frost-tolerant
Cauliflower	Jul 8-15 Jul 14-15	Jul 22-29 Jul 22-29	75	Frost-tolerant
Chives	Jul 22-Aug 19 Jul 22-29, Aug 12-19	N/A	70	Frost-tolerant
Collards	Jul 8-22 Jul 14-22	Aug 19-Sep 2 Aug 19-27	75	Frost-hardy
Fennel	Jul 15-29 Jul 15-29	N/A	80	Tender
Garlic	Oct 28-Nov 10 Oct 28-Nov 8	N/A	120	Frost-hardy
Green Beans	Jul 29-Aug 12 Jul 29	N/A	55	Tender
Kale	Aug 5-19 Aug 12-19	N/A	60	Frost-hardy
Kohlrabi	Aug 19-5 Aug 19-27	Sep 9-Aug 26 Sep 10-26	45	Frost-tolerant
Lettuce	Aug 19-Sep 2 Aug 19-27	N/A	60	Frost-tolerant
Mustard Greens	Aug 12-Sep 2 Aug 12-27	N/A	45	Tender
Peas	Aug 5-19 Aug 12-19	N/A	55	Tender
Radishes	Sep 2-16 Sep 2-9	N/A	25	Frost-tolerant
Spinach	Aug 26-Sep 16 Aug 26-27, Sep 10-16	N/A	30	Frost-hardy
Swiss Chard	Aug 5-19 Aug 12-19	N/A	60	Frost-tolerant
Turnips	Aug 12-26	N/A	50	Frost-tolerant

Understanding the Chart

The charts include several columns to guide your planting:

• Plant names are linked: Click any crop to view its Growing Guide for detailed advice on planting, care, and harvest.

• Start Seeds Indoors: When to sow seeds inside for an early start.

• Plant Seedlings Outdoors: When to transplant seedlings or starter plants from a nursery.

• Start Seeds Outdoors: When to sow seeds directly in your garden soil.

• Last Date to Plant: The final date to plant so crops have time to mature before frost.

• Moon Dates: Best planting days based on lunar phases—an age-old gardening tradition.

• N/A: Indicates a planting method that is generally not recommended but may still be possible.

Use the icon below to get the best printable or email-friendly version of the calendar.

Planting Guidance

• Many quick-maturing crops, such as radishes, can be planted successively throughout the summer in northern regions. However, some cool-season crops—such as kale and lettuce—may bolt in hot temperatures. Gardeners in warmer regions may need a short summer break, resuming planting once the heat passes.
• Many crops that are typically started indoors for spring can be planted directly in the soil for fall. Warm soil, fewer pests, and seasonal rainfall make it easier to grow. Some crops must be harvested by the first frost, but many are frost-tolerant and even taste sweeter after a light frost.
• The dates are calculated relative to frost, giving each user a unique calendar. That’s why some crops, especially similar varieties like kale and lettuce, or seedlings such as broccoli and cabbage, may share the same dates.

Frequently Asked Questions

How Accurate Are the Planting Dates?

Use this chart as a planning guide and starting point. The frost dates are averages based on historical data—they are not predictions for the coming year. While most gardeners rely on frost dates to plan planting, some locations in the U.S. may not experience frost, and certain areas may not match these dates perfectly.

Local microclimates—such as low spots, slopes, or sheltered areas—can also affect your planting schedule. Watch the weather, talk with fellow gardeners, and take notes on what works best in your garden.

Why Do You Start Seeds Indoors?

Starting seeds indoors gives crops a head start on the growing season, which is crucial in regions with shorter seasons. Indoors, young plants grow in a stable, controlled environment, protected from unpredictable rain, drought, frost, temperature swings, pests, and diseases.

For most crops, seeds should be started 6–8 weeks before the last spring frost. This ensures plants grow large and healthy enough to survive transplanting outdoors. Read more about starting seeds indoors here.

Which Seeds Should Be Started Indoors?

Not all vegetables benefit from indoor starting. Most are better off direct-sown in the garden.

• Seeds that should be started indoors are typically:
• Tender vegetables: tomatoes, peppers, eggplant
• Long-season crops: broccoli, cauliflower, Brussels sprouts

Crops like carrots, radishes, beets, squash, and watermelon are best sown directly in the garden, as they do not tolerate root disturbance and need warm soil to thrive. Read more about direct-sowing seeds here!

When Should You Transplant Seedlings?

Transplant seedlings when they outgrow their trays or starter pots.

• If outdoor conditions aren’t ready, move seedlings to larger pots indoors.
• Begin hardening off approximately one week before the last frost date to gradually acclimate plants to outdoor conditions.
• Then transplant them into the garden. Get more tips for transplanting seedlings.

What Is Planting by the Moon?

Planting by the Moon (or “Gardening by the Moon”) is a traditional method for timing crop planting based on lunar phases:

• Above-ground crops: Plant annual flowers and vegetables during the Waxing Moon (new to full).
• Below-ground crops: Plant bulbs, biennials, perennials, and root vegetables during the Waning Moon (full to new).

Gardeners report larger, tastier harvests using this method. Our planting calendar includes Moon dates to help you plan. Learn more about Planting and Gardening by the Moon.