SproutSmart
SproutSmart™ Intelligent Garden Sowing

Zone 3b Planting Schedule

All Zones Zone 3b Save Garden
Last spring frost: May 19th
First fall frost: Sep 21st
Growing season: 125 days

Action Plan: June in Zone 3b

Expert Note

In June for Zone 3b, keep soil evenly moist and mulch to stabilize temperature. Watch for early-season pests like flea beetles and cucumber beetles; use row cover early and inspect leaves weekly. Avoid working wet soil to prevent compaction.

Seed & Soil

Direct sow warm-season crops now that soil is reliably hot: Early Prolific Straightneck, Marketmore 76, and Boston Pickling. If you started transplants, set out Charentais and Regal F1 after nights stay consistently mild.

The Harvest

Start harvesting tender greens and cut-and-come-again types like Spinach Amaranth, Salad Greens, and Bloomsdale Long Standing as they reach size. Keep picking frequently to slow bolting, and harvest Watercress promptly for best flavor.

Planting Schedule

Add crops from the list below to build your planting schedule.
Crop Indoor Start Transplant / Sow Harvest Window 🌿
African Marigold Apr 7th Jun 2nd Aug 1st – Sep 21st
Allsweet May 19th Jun 2nd Aug 26th – Sep 21st
Alvaro May 5th Jun 2nd Aug 11th – Sep 21st
Ambrosia Jun 2nd Jun 16th Sep 4th – Sep 21st
Ambrosia F1 May 19th Jun 2nd Aug 16th – Sep 21st
Amy Jun 2nd Jun 16th Aug 25th – Sep 21st
Ananas D'Amerique A Chair Verte Jun 2nd Jun 16th Sep 9th – Sep 21st
Anise Hyssop Apr 14th Jun 2nd Aug 1st – Sep 21st
Apple Gourd Direct Sow Jun 2nd Sep 10th – Sep 21st
Arava Jun 2nd Jun 16th Aug 25th – Sep 21st
Armenian Cucumber May 19th Jun 2nd Aug 11th – Sep 21st
Armenian Dark Green May 19th Jun 2nd Aug 6th – Sep 21st
Armenian Pale Green Direct Sow Jun 2nd Aug 11th – Sep 21st
Ashley May 19th Jun 2nd Aug 1st – Sep 21st
Athena F1 May 19th Jun 2nd Aug 16th – Sep 21st
Atlantic Giant May 19th Jun 2nd Sep 30th – Sep 21st
Baby Direct Sow Jun 2nd Jul 27th – Sep 21st
Baby Bear Direct Sow Jun 2nd Sep 5th – Sep 21st
Baby Blue Hubbard Jun 2nd Jun 16th Sep 19th – Sep 21st
Baby Boo Direct Sow Jun 2nd Sep 5th – Sep 21st
Bambino Direct Sow Jun 2nd Jul 27th – Sep 21st
Banana Melon Direct Sow Jun 2nd Aug 16th – Sep 21st
Banana Pink Jumbo May 19th Jun 2nd Sep 5th – Sep 21st
Bengal May 19th Jun 2nd Aug 11th – Sep 21st
Big Okra Direct Sow Jun 2nd Aug 1st – Sep 21st
Birdhouse Gourd Direct Sow Jun 2nd Sep 20th – Sep 21st
Black Diamond May 19th Jun 2nd Aug 26th – Sep 21st
Black Forest May 19th Jun 2nd Sep 5th – Sep 21st
Bonbon May 19th Jun 2nd Sep 5th – Sep 21st
Bonbon F1 May 19th Jun 2nd Sep 5th – Sep 21st
Boston Pickling May 19th Jun 2nd Jul 22nd – Sep 21st
Bozeman May 19th Jun 2nd Aug 6th – Sep 21st
Bradshaw Apr 7th Jun 2nd Sep 20th – Sep 21st
Burgundy Okra Direct Sow Jun 2nd Aug 1st – Sep 21st
Burpee Hybrid May 19th Jun 2nd Aug 21st – Sep 21st
Bush Pickle Jun 2nd Jun 16th Aug 10th – Sep 21st
Bush Slicer May 19th Jun 2nd Jul 27th – Sep 21st
Bushel Basket Gourd Direct Sow Jun 2nd Sep 30th – Sep 21st
Bushel Gourd May 19th Jun 2nd Sep 10th – Sep 21st
Butterbush Jun 2nd Jun 16th Sep 29th – Sep 21st
Butternut Rugosa May 19th Jun 2nd Sep 5th – Sep 21st
Calabash May 5th Jun 2nd Aug 31st – Sep 21st
Calypso Direct Sow Jun 2nd Jul 20th – Sep 21st
Cannon Ball May 19th Jun 2nd Sep 10th – Sep 21st
Canteen Gourd May 19th Jun 2nd Sep 20th – Sep 21st
Caserta Jun 2nd Jun 16th Jul 31st – Sep 21st
Casper Direct Sow Jun 2nd Sep 5th – Sep 21st
Charentais Jun 2nd Jun 16th Sep 4th – Sep 21st
Charentais Melon Jun 2nd Jun 16th Sep 4th – Sep 21st
Charleston Grey Jun 2nd Jun 16th Sep 19th – Sep 21st
Cherokee Candy Roaster May 19th Jun 2nd Sep 5th – Sep 21st
Chicago Pickling May 19th Jun 2nd Jul 24th – Sep 21st
Cocozelle Di Napoli Direct Sow Jun 2nd Jul 17th – Sep 21st
Common Italian Oregano Apr 7th Jun 2nd Aug 16th – Sep 21st
Common Sage Apr 7th Jun 2nd Aug 11th – Sep 21st
Compacta Apr 7th Jun 2nd Aug 16th – Sep 21st
Congo May 19th Jun 2nd Aug 26th – Sep 21st
Connecticut Field Direct Sow Jun 2nd Sep 20th – Sep 21st
Cornell's Bush Delicata Jun 2nd Jun 16th Sep 19th – Sep 21st
Corsican Direct Sow Jun 2nd Sep 20th – Sep 21st
County Fair May 19th Jun 2nd Jul 22nd – Sep 21st
Crenshaw Melon May 19th Jun 2nd Aug 26th – Sep 21st
Crimson Sweet May 19th Jun 2nd Aug 26th – Sep 21st
Cucamelon Direct Sow Jun 2nd Aug 11th – Sep 21st
Cucumber Direct Sow Jun 2nd Jul 22nd – Sep 21st
Cue Ball May 19th Jun 2nd Jul 22nd – Sep 21st
Dancing Swans Jun 2nd Jun 16th Oct 4th – Sep 21st
Dark Star Direct Sow Jun 2nd Jul 17th – Sep 21st
Delicata May 19th Jun 2nd Aug 31st – Sep 21st
Delicata Zeppelin Jun 2nd Jun 16th Sep 14th – Sep 21st
Desi Summer Squash May 19th Jun 2nd Jul 17th – Sep 21st
Dinosaur Gourd May 19th Jun 2nd Sep 20th – Sep 21st
Dipper Direct Sow Jun 2nd Aug 21st – Sep 21st
Dwarf Sage Apr 7th Jun 2nd Aug 1st – Sep 21st
Earli-Dew May 19th Jun 2nd Aug 11th – Sep 21st
Early Giant Jun 2nd Jun 16th Sep 14th – Sep 21st
Early Prolific Straightneck Direct Sow Jun 2nd Jul 17th – Sep 21st
Early Silver Line May 19th Jun 2nd Aug 1st – Sep 21st
Early White Bush Scallop May 19th Jun 2nd Jul 17th – Sep 21st
Eden's Gem Jun 2nd Jun 16th Sep 4th – Sep 21st
Edisto 47 May 19th Jun 2nd Aug 21st – Sep 21st
Eight Ball Jun 2nd Jun 16th Jul 31st – Sep 21st
Eldorado Jun 2nd Jun 16th Sep 9th – Sep 21st
Emerald Gem May 19th Jun 2nd Aug 21st – Sep 21st
English Thyme Apr 7th Jun 2nd Jun 1st – Sep 21st
Excelsior Direct Sow Jun 2nd Jul 22nd – Sep 21st
Fife Creek Cowhorn Direct Sow Jun 2nd Aug 1st – Sep 21st
Forest Green Apr 28th Jun 2nd Aug 11th – Sep 21st
French Chervil May 5th Jun 2nd Jul 17th – Sep 21st
Futuro Hybrid Jun 2nd Jun 16th Sep 4th – Sep 21st
Galor May 19th Jun 2nd Aug 16th – Sep 21st
Garden sage Apr 7th Jun 2nd Aug 1st – Sep 21st
Gherking Direct Sow Jun 2nd Jul 22nd – Sep 21st
Ginkaku May 19th Jun 2nd Aug 16th – Sep 21st
Gobbo di Nizza Mar 10th Jun 2nd Sep 20th – Sep 21st
Golden Beauty Jun 2nd Jun 16th Sep 19th – Sep 21st
Golden Beauty Casaba Direct Sow Jun 2nd Sep 5th – Sep 21st
Golden Crispy Hybrid Jun 2nd Jun 16th Sep 4th – Sep 21st
Golden Dawn III Direct Sow Jun 2nd Jul 17th – Sep 21st
Golden Delight May 19th Jun 2nd Jul 22nd – Sep 21st

Frequently Asked Questions

What are the frost dates for Zone Zone 3b?
In Zone Zone 3b, the average last spring frost is May 19th and the average first fall frost is Sep 21st.
When is the best time to start seeds indoors in Zone Zone 3b?
The best time to start most seeds indoors is 6 to 8 weeks before your last spring frost date of May 19th.
How long is the growing season in Zone Zone 3b?
Zone Zone 3b has a growing season of approximately 125 days.