How to Grow Cantaloupe
Cantaloupe At a Glance
Difficulty
Moderate
Category
Fruit
Sun Exposure
Full Sun
Frost Tolerance
Frost Tender
Cold Hardiness
Survives to 5°C
Plant Family
Cucurbitaceae
Growing Season
Warm Season
Plant Lifecycle
Annual
How to Start It
★ Recommended for beginners
Melons need warmth, so wait until about 10 days after your last frost, when the soil has reached about 18°C (64°F). Sow 2 to 3 seeds 1 cm deep in a small mound of compost-rich soil, with 90 cm between mounds, and they sprout in 7 to 14 days. Keep the strongest seedling at each spot, and cover the mound with row cover on cool nights to give it a boost.
Cantaloupe needs heat, sun and about 80 days of warm weather, so give it your warmest spot. The easy part comes at the end: a ripe cantaloupe tells you it is ready by slipping off the vine with a gentle push.
When To Start
First chance to plant
10 Days After Last Frost
Last chance to plant
90 Days Before First Frost
When should you plant Cantaloupe?
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Your Cantaloupe Planting Window
Start planting
May 15, 2026
Last chance
Sep 10, 2026
Your Cantaloupe Calendar
Set your location to turn these into exact dates and reminders.
Sow cantaloupe outdoors once the soil is warm, about 18°C
10 days after your last frost· every year
Optional: start cantaloupe indoors for a head start
4 weeks before your last frost· every year· optional
Pick cantaloupe when it slips off the vine and smells sweet
80 days after your last frost· every year· optional
Did you water your cantaloupe seedlings today? Keep the top of the soil damp until they are up and growing.
About 1 days after you plant it
Your cantaloupe is spreading out! Water deeply at the base and keep the leaves dry.
About 41 days after you plant it
Melons are on the way! A ripe cantaloupe slips off the vine with a gentle push.
About 67 days after you plant it
Picking time may be here: check your cantaloupe.
About 80 days after you plant it
The Journey Ahead
Cantaloupe's Lifecycle
Seedling
Mature Plant
Seed Production
Step 2
Planting & Sprouting
Expect sprouts in 7–14 days
Growing Tips
- 1Plant cantaloupe in your sunniest, warmest spot, with at least 6 to 8 hours of direct sun a day.
- 2Mix plenty of compost into the soil, since melons are hungry plants.
- 3Water deeply at the base about once a week while the vines grow, then water less once the fruit is full size so the flesh turns sweeter.
- 4Feed with worm castings or compost tea when the vines start to run and again when the first fruit sets.
- 5Set each growing melon on a board or a bed of straw to keep it clean and dry.
- 6Cover young plants with row cover against cucumber beetles until the flowers open, and keep the leaves dry to slow powdery mildew (a white dust on the leaves).
Seedling Phase
Step 3
Growth & Maturity
~80
Days to Maturity
30 cm
Mature Height
120 cm
Mature Width
Pests to Watch For
Diseases to Watch For
Mature Plant
Step 4
Harvesting
Harvest Window
21 days
When to Pick
Harvest when fruit slips from vine
How to Harvest
- 1A cantaloupe is ripe when the skin under the netting turns from green to tan or golden and the stem end smells sweet.
- 2The surest sign is a small crack all around the stem, where the melon meets the vine.
- 3A ripe one slips off with a gentle push of your thumb, which growers call full slip.
- 4If it does not come away easily, wait a day or two and try again.
- 5Melons do not get sweeter after picking, so wait for those signs.
- 6Keep a whole ripe cantaloupe on the counter for a day or two, and keep cut pieces covered in the fridge.
Step 5
Saving Seeds
How to Save Seeds
Cantaloupe crosses with honeydew and other melons, but not with watermelon, cucumber or squash. To keep it pure, grow just one melon variety, and remember hybrid F1 seeds will not grow true. Scoop the seeds from a fully ripe melon, rinse them in a sieve to remove the pulp, and throw out any that float. Dry them on a plate for 1 to 2 weeks, then store them labelled somewhere cool, dark and dry, where they keep about 5 years.
Seed Production
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