Cantaloupe illustration 🍈

🍈 Growing Cantaloupe in Zone 3b

Zone 3b has harsh winters and a short growing season. Start Cantaloupe early indoors to maximize your harvest window. Last frost: May 15. First frost: Sep 22.

Planting Calendar

Indoor
Outdoor
Harvest
Apr 17Sep 22

Season: May 15 – Sep 22 (130 days)

Zone3b
Last FrostMay 15
First FrostSep 22
Season Length130 days
Days to Harvest85
SunFull Sun
Frost ToleranceNone
Spacing1/sqft (12" apart)

When to Plant Cantaloupe in Zone 3b

Start Seeds Indoors: Apr 17

Start Cantaloupe seeds indoors around Apr 17 (4 weeks before last frost). Optimal germination temperature: 85°F. Germinates in 4–10 days.

Transplant Outdoors: May 29

Transplant Cantaloupe seedlings outdoors after May 29. Wait until soil temperature reaches 65°F. Space plants at 1/sqft (12" apart). Harden off plants for a week before moving outside.

Harvest: Aug 7

First harvest approximately Aug 7 (~70 days from transplant). Continue harvesting until first frost (Sep 22).

Companion Planting

✅ Corn✅ Sunflowers✅ Nasturtiums✅ Marigolds
❌ Potatoes❌ Cucumbers

Plan Your Cantaloupe Garden

Track Cantaloupe from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.

Start Free Cantaloupe Growing Guide