Warm-Season Vegetable

When to Plant Cantaloupe

Sweet, fragrant melons that need warm soil and a long, hot growing season. Worth the wait for homegrown flavor.

Sun

Full sun (8+ hours)

Water

1-2 inches per week

Days to Harvest

80-100

Difficulty

intermediate

Spacing

36"

Frost Tolerance

none

The Short Answer

Cantaloupe are frost-sensitive and need warm soil and air temperatures to thrive. Start seeds indoors 4 weeks before your last frost date, then transplant outside 3 weeks after your last frost when soil temperatures reach at least 65°F. You can also direct sow seeds 3 weeks after your last frost. Enter your zip code on our homepage tool for exact dates.

How to Grow Cantaloupe

Cantaloupe demands patience and heat — the 80-100 day maturity means starting early and choosing the right variety matters. The 'slip' stage is the definitive ripeness indicator: when you apply gentle pressure to the stem, a ripe cantaloupe separates cleanly from the vine. If you have to pull or cut, it's not ready. Reduce watering during the last 10 days before harvest to concentrate sugars. Raise ripening fruit off the ground with cardboard, melon cradles, or inverted pots to prevent bottom rot. Ambrosia and Hale's Best are the flavor standards.

Starting Seeds Indoors

Begin cantaloupe seeds indoors 4 weeks before your average last frost date. Seeds need soil temperatures of at least 65°F to germinate, which typically takes 5-10 days. Provide 12 hours of light per day using a south-facing window or grow lights.

Transplanting

Move seedlings outside 3 weeks after your last frost date, once soil temperatures reach 65°F. Harden off seedlings for 7 days before transplanting by gradually exposing them to outdoor conditions.

Direct Sowing

Cantaloupe can be direct sown 3 weeks after your last frost date. Plant seeds 1" deep, spaced 36" apart.

Growing Tips

Ripe when the stem slips easily from the fruit and the blossom end smells sweet. Reduce watering as fruits near maturity for concentrated sweetness.

Companion Planting

Good companions:

Corn Sunflowers

Keep away from:

Potatoes

Cantaloupe Planting Dates by State

Click your state for cantaloupe planting dates specific to your location:

Note: Planting dates are based on average frost dates from NOAA Climate Normals (30-year averages). Actual conditions vary year to year. Always check your local forecast before planting frost-sensitive crops.

Last reviewed: March 29, 2026