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SproutSmart™ Intelligent Garden Sowing

Zone 4a Planting Schedule

All Zones Zone 4a Save Garden
Last spring frost: May 15th
First fall frost: Sep 24th
Growing season: 132 days

Action Plan: June in Zone 4a

Expert Note

In June, keep soil evenly moist and mulch to hold moisture and reduce weeds. Watch for aphids, flea beetles, and powdery mildew on leafy crops; improve airflow and avoid wetting foliage. Feed established plants lightly if growth slows.

Seed & Soil

Transplant or direct sow heat-lovers now: Tomato and Zucchini for steady summer harvests, plus Basil to boost flavor and pollinator activity. If you have warm soil, direct sow Cucumber for quick, space-efficient production.

The Harvest

Start harvesting regularly from Lettuce and Spinach to keep them tender before heat triggers bitterness. Pick Radish and Arugula as they mature, and snip leafy greens like Kale selectively for continued regrowth.

Planting Schedule

Add crops from the list below to build your planting schedule.
Crop Indoor Start Transplant / Sow Harvest Window 🌿
Blenheim Orange Melon May 22nd Jun 5th Aug 29th – Sep 24th
Bushel Basket May 22nd Jun 5th Sep 23rd – Sep 24th
Candystick Dessert May 22nd Jun 5th Sep 8th – Sep 24th
Dino Gourd May 22nd Jun 5th Sep 23rd – Sep 24th
Giant Speckled Christmas Lima Direct Sow Jun 5th Sep 3rd – Sep 24th
Honeydew Green Flesh May 22nd Jun 5th Aug 29th – Sep 24th
Hooligan May 22nd Jun 5th Sep 8th – Sep 24th
North Georgia Candy Roaster May 22nd Jun 5th Sep 8th – Sep 24th
Parbhani Kranti Direct Sow Jun 5th Jul 30th – Sep 24th
Queen Anne's Pocket Melon Jun 5th Jun 19th Sep 2nd – Sep 24th
Red Apr 17th Jun 5th Jul 30th – Sep 24th
Speckled Swan May 22nd Jun 5th Sep 13th – Sep 24th
Tennessee Sweet Potato Direct Sow Jun 5th Sep 8th – Sep 24th
Wisconsin SMR 58 May 22nd Jun 5th Jul 25th – Sep 24th
Zephyr May 22nd Jun 5th Jul 20th – Sep 24th
Ambrosia May 29th Jun 12th Aug 31st – Sep 24th
Amish Pie Direct Sow Jun 12th Sep 20th – Sep 24th
Amy May 29th Jun 12th Aug 21st – Sep 24th
Ananas D'Amerique A Chair Verte May 29th Jun 12th Sep 5th – Sep 24th
Annie Oakley II Direct Sow Jun 12th Aug 1st – Sep 24th
Ao Shiso Apr 17th Jun 12th Jul 27th – Sep 24th
Aonaga Jibai Jun 12th Jun 26th Aug 20th – Sep 24th
Arava May 29th Jun 12th Aug 21st – Sep 24th
Autumn Delight Direct Sow Jun 12th Sep 10th – Sep 24th
Baby Blue Hubbard May 29th Jun 12th Sep 15th – Sep 24th
Baby Bubba Direct Sow Jun 12th Aug 1st – Sep 24th
Blue Ballet Direct Sow Jun 12th Sep 15th – Sep 24th
Bottle Gourd Jun 12th Jun 26th Sep 24th – Sep 24th
Bowling Red Apr 3rd Jun 12th Aug 6th – Sep 24th
Britton Shiso Apr 17th Jun 12th Aug 1st – Sep 24th
Bush Pickle May 29th Jun 12th Aug 6th – Sep 24th
Butterbush May 29th Jun 12th Sep 25th – Sep 24th
Candle Fire Direct Sow Jun 12th Aug 6th – Sep 24th
Caserta May 29th Jun 12th Jul 27th – Sep 24th
Caveman’s Club Gourd Direct Sow Jun 12th Oct 10th – Sep 24th
Cha Cha Jun 12th Jun 26th Sep 24th – Sep 24th
Charentais May 29th Jun 12th Aug 31st – Sep 24th
Charentais Melon May 29th Jun 12th Aug 31st – Sep 24th
Charleston Grey May 29th Jun 12th Sep 15th – Sep 24th
Chicago Warted Hubbard Direct Sow Jun 12th Sep 15th – Sep 24th
Cinderella Direct Sow Jun 12th Sep 20th – Sep 24th
Cornell's Bush Delicata May 29th Jun 12th Sep 15th – Sep 24th
Corsican Gourd May 8th Jun 12th Sep 20th – Sep 24th
Dancing Swans May 29th Jun 12th Sep 30th – Sep 24th
Delicata Zeppelin May 29th Jun 12th Sep 10th – Sep 24th
Diplomat Jun 12th Jun 26th Sep 9th – Sep 24th
Early Giant May 29th Jun 12th Sep 10th – Sep 24th
Early White Grano Direct Sow Jun 12th Sep 5th – Sep 24th
Eden's Gem May 29th Jun 12th Aug 31st – Sep 24th
Eight Ball May 29th Jun 12th Jul 27th – Sep 24th
Eldorado May 29th Jun 12th Sep 5th – Sep 24th
Flat Leaf Splendor May 1st Jun 12th Aug 21st – Sep 24th
Futuro Hybrid May 29th Jun 12th Aug 31st – Sep 24th
Golden Beauty May 29th Jun 12th Sep 15th – Sep 24th
Golden Crispy Hybrid May 29th Jun 12th Aug 31st – Sep 24th
Golden Hubbard May 29th Jun 12th Sep 15th – Sep 24th
Goldmine Zucchini May 29th Jun 12th Jul 27th – Sep 24th
Green Dragon Direct Sow Jun 12th Aug 6th – Sep 24th
Green Flesh Honeydew May 29th Jun 12th Aug 26th – Sep 24th
Green Machine May 29th Jun 12th Sep 5th – Sep 24th
Green Striped Cushaw Jun 12th Jun 26th Sep 29th – Sep 24th
Grey May 29th Jun 12th Jul 27th – Sep 24th
Hale's Best Jumbo Jun 12th Jun 26th Sep 14th – Sep 24th
Harmonie May 29th Jun 12th Aug 6th – Sep 24th
Hokus May 29th Jun 12th Aug 6th – Sep 24th
Honey Babe May 29th Jun 12th Aug 31st – Sep 24th
Honey Boat Delicata May 29th Jun 12th Sep 10th – Sep 24th
Honey Brew May 29th Jun 12th Aug 31st – Sep 24th
Honeypatch May 29th Jun 12th Sep 15th – Sep 24th
Infinite Gold May 29th Jun 12th Sep 5th – Sep 24th
Jezebel May 29th Jun 12th Aug 6th – Sep 24th
Kajari Melon Direct Sow Jun 12th Aug 31st – Sep 24th
Kamo Kamo May 29th Jun 12th Sep 10th – Sep 24th
Lakota May 29th Jun 12th Sep 20th – Sep 24th
Lettuce Leaf May 1st Jun 12th Jul 22nd – Sep 24th
Magnus May 29th Jun 12th Aug 31st – Sep 24th
Marketmore 76 May 29th Jun 12th Aug 6th – Sep 24th
Mi Chang Wo May 29th Jun 12th Sep 10th – Sep 24th
Moon And Stars (Yellow Flesh) May 29th Jun 12th Sep 5th – Sep 24th
Munchkin May 29th Jun 12th Sep 15th – Sep 24th
Musquee de Provence May 29th Jun 12th Sep 20th – Sep 24th
Navajo Winter May 29th Jun 12th Sep 15th – Sep 24th
Oka May 29th Jun 12th Aug 26th – Sep 24th
Orange Delight Jun 12th Jun 26th Sep 14th – Sep 24th
Orange Summer Direct Sow Jun 12th Sep 10th – Sep 24th
Orient Express May 29th Jun 12th Aug 6th – Sep 24th
Parisian Gherkin May 29th Jun 12th Aug 6th – Sep 24th
Patisson Panache Blanc Et Vert May 29th Jun 12th Aug 1st – Sep 24th
Racer PMR Direct Sow Jun 12th Sep 15th – Sep 24th
Raven May 29th Jun 12th Jul 27th – Sep 24th
Red Noodle Direct Sow Jun 12th Aug 6th – Sep 24th
Regal F1 Jun 12th Jun 26th Aug 20th – Sep 24th
Round Gourd May 29th Jun 12th Aug 21st – Sep 24th
San Juan Jun 12th Jun 26th Sep 14th – Sep 24th
Sancho Jun 12th Jun 26th Sep 9th – Sep 24th
Savor May 29th Jun 12th Aug 31st – Sep 24th
Scallopini May 29th Jun 12th Aug 1st – Sep 24th
Shiofi Shiro May 29th Jun 12th Aug 11th – Sep 24th
Shokichi Green May 29th Jun 12th Sep 5th – Sep 24th
Silver Queen Direct Sow Jun 12th Aug 6th – Sep 24th

Frequently Asked Questions

What are the frost dates for Zone Zone 4a?
In Zone Zone 4a, the average last spring frost is May 15th and the average first fall frost is Sep 24th.
When is the best time to start seeds indoors in Zone Zone 4a?
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 4a?
Zone Zone 4a has a growing season of approximately 132 days.