Zone 3a Planting Schedule
Last spring frost:
May 15th
First fall frost:
Sep 1st
Growing season:
109 days
Action Plan: June in Zone 3a
Expert Note
In June, keep soil evenly moist and mulch to steady temperatures. Watch for flea beetles and aphids on young brassicas and greens; use row cover early and rinse aphids off with water. Ensure good drainage to prevent rot in heavy soils.
Seed & Soil
Transplant or direct sow heat-lovers like Tomato and Cucumber once nights stay reliably warm. Add quick, high-yield picks by direct sowing Zucchini and Basil for steady summer harvests. Keep transplants shaded for a day or two to reduce transplant shock.
The Harvest
Start harvesting Spinach and Salad Greens frequently for best tenderness. Cut Arugula and Radish as they reach size, and keep picking to encourage more growth. For brassicas, harvest Broccoli heads promptly when tight and firm.
Planting Schedule
Add crops from the list below to build your planting schedule.| Crop | Indoor Start | Transplant / Sow | Harvest Window | 🌿 |
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May 22nd | Jun 5th | Aug 29th – Sep 1st |
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May 22nd | Jun 5th | Sep 23rd – Sep 1st |
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May 22nd | Jun 5th | Sep 8th – Sep 1st |
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May 22nd | Jun 5th | Sep 23rd – Sep 1st |
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Direct Sow | Jun 5th | Sep 3rd – Sep 1st |
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May 22nd | Jun 5th | Aug 29th – Sep 1st |
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May 22nd | Jun 5th | Sep 8th – Sep 1st |
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May 22nd | Jun 5th | Sep 8th – Sep 1st |
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Direct Sow | Jun 5th | Jul 30th – Sep 1st |
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Jun 5th | Jun 19th | Sep 2nd – Sep 1st |
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Apr 17th | Jun 5th | Jul 30th – Sep 1st |
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May 22nd | Jun 5th | Sep 13th – Sep 1st |
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Direct Sow | Jun 5th | Sep 8th – Sep 1st |
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May 22nd | Jun 5th | Jul 25th – Sep 1st |
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May 22nd | Jun 5th | Jul 20th – Sep 1st |
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May 29th | Jun 12th | Aug 31st – Sep 1st |
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Direct Sow | Jun 12th | Sep 20th – Sep 1st |
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May 29th | Jun 12th | Aug 21st – Sep 1st |
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May 29th | Jun 12th | Sep 5th – Sep 1st |
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Direct Sow | Jun 12th | Aug 1st – Sep 1st |
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Apr 17th | Jun 12th | Jul 27th – Sep 1st |
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Jun 12th | Jun 26th | Aug 20th – Sep 1st |
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May 29th | Jun 12th | Aug 21st – Sep 1st |
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Direct Sow | Jun 12th | Sep 10th – Sep 1st |
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May 29th | Jun 12th | Sep 15th – Sep 1st |
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Direct Sow | Jun 12th | Aug 1st – Sep 1st |
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Direct Sow | Jun 12th | Sep 15th – Sep 1st |
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Jun 12th | Jun 26th | Sep 24th – Sep 1st |
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Apr 3rd | Jun 12th | Aug 6th – Sep 1st |
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Apr 17th | Jun 12th | Aug 1st – Sep 1st |
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May 29th | Jun 12th | Aug 6th – Sep 1st |
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May 29th | Jun 12th | Sep 25th – Sep 1st |
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Direct Sow | Jun 12th | Aug 6th – Sep 1st |
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May 29th | Jun 12th | Jul 27th – Sep 1st |
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Direct Sow | Jun 12th | Oct 10th – Sep 1st |
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Jun 12th | Jun 26th | Sep 24th – Sep 1st |
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May 29th | Jun 12th | Aug 31st – Sep 1st |
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May 29th | Jun 12th | Aug 31st – Sep 1st |
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May 29th | Jun 12th | Sep 15th – Sep 1st |
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Direct Sow | Jun 12th | Sep 15th – Sep 1st |
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Direct Sow | Jun 12th | Sep 20th – Sep 1st |
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May 29th | Jun 12th | Sep 15th – Sep 1st |
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May 8th | Jun 12th | Sep 20th – Sep 1st |
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May 29th | Jun 12th | Sep 30th – Sep 1st |
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May 29th | Jun 12th | Sep 10th – Sep 1st |
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Jun 12th | Jun 26th | Sep 9th – Sep 1st |
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May 29th | Jun 12th | Sep 10th – Sep 1st |
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Direct Sow | Jun 12th | Sep 5th – Sep 1st |
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May 29th | Jun 12th | Aug 31st – Sep 1st |
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May 29th | Jun 12th | Jul 27th – Sep 1st |
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May 29th | Jun 12th | Sep 5th – Sep 1st |
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May 1st | Jun 12th | Aug 21st – Sep 1st |
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May 29th | Jun 12th | Aug 31st – Sep 1st |
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May 29th | Jun 12th | Sep 15th – Sep 1st |
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May 29th | Jun 12th | Aug 31st – Sep 1st |
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May 29th | Jun 12th | Sep 15th – Sep 1st |
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May 29th | Jun 12th | Jul 27th – Sep 1st |
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Direct Sow | Jun 12th | Aug 6th – Sep 1st |
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May 29th | Jun 12th | Aug 26th – Sep 1st |
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May 29th | Jun 12th | Sep 5th – Sep 1st |
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Jun 12th | Jun 26th | Sep 29th – Sep 1st |
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May 29th | Jun 12th | Jul 27th – Sep 1st |
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Jun 12th | Jun 26th | Sep 14th – Sep 1st |
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May 29th | Jun 12th | Aug 6th – Sep 1st |
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May 29th | Jun 12th | Aug 6th – Sep 1st |
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May 29th | Jun 12th | Aug 31st – Sep 1st |
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May 29th | Jun 12th | Sep 10th – Sep 1st |
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May 29th | Jun 12th | Aug 31st – Sep 1st |
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May 29th | Jun 12th | Sep 15th – Sep 1st |
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May 29th | Jun 12th | Sep 5th – Sep 1st |
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May 29th | Jun 12th | Aug 6th – Sep 1st |
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Direct Sow | Jun 12th | Aug 31st – Sep 1st |
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May 29th | Jun 12th | Sep 10th – Sep 1st |
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May 29th | Jun 12th | Sep 20th – Sep 1st |
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May 1st | Jun 12th | Jul 22nd – Sep 1st |
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May 29th | Jun 12th | Aug 31st – Sep 1st |
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May 29th | Jun 12th | Aug 6th – Sep 1st |
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May 29th | Jun 12th | Sep 10th – Sep 1st |
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May 29th | Jun 12th | Sep 5th – Sep 1st |
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May 29th | Jun 12th | Sep 15th – Sep 1st |
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May 29th | Jun 12th | Sep 20th – Sep 1st |
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May 29th | Jun 12th | Sep 15th – Sep 1st |
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May 29th | Jun 12th | Aug 26th – Sep 1st |
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Jun 12th | Jun 26th | Sep 14th – Sep 1st |
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Direct Sow | Jun 12th | Sep 10th – Sep 1st |
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May 29th | Jun 12th | Aug 6th – Sep 1st |
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May 29th | Jun 12th | Aug 6th – Sep 1st |
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May 29th | Jun 12th | Aug 1st – Sep 1st |
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Direct Sow | Jun 12th | Sep 15th – Sep 1st |
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May 29th | Jun 12th | Jul 27th – Sep 1st |
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Direct Sow | Jun 12th | Aug 6th – Sep 1st |
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Jun 12th | Jun 26th | Aug 20th – Sep 1st |
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May 29th | Jun 12th | Aug 21st – Sep 1st |
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Jun 12th | Jun 26th | Sep 14th – Sep 1st |
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Jun 12th | Jun 26th | Sep 9th – Sep 1st |
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May 29th | Jun 12th | Aug 31st – Sep 1st |
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May 29th | Jun 12th | Aug 1st – Sep 1st |
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May 29th | Jun 12th | Aug 11th – Sep 1st |
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May 29th | Jun 12th | Sep 5th – Sep 1st |
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Direct Sow | Jun 12th | Aug 6th – Sep 1st |
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Frequently Asked Questions
What are the frost dates for Zone Zone 3a?
In Zone Zone 3a, the average last spring frost is May 15th and the average first fall frost is Sep 1st.
When is the best time to start seeds indoors in Zone Zone 3a?
The best time to start most seeds indoors is 6 to 8 weeks before your last spring frost date of May 15th.
How long is the growing season in Zone Zone 3a?
Zone Zone 3a has a growing season of approximately 109 days.