How to Grow Melons USA
On this page
Sow melons once soil temperature reaches 66°F (19°C).
The short answer
- Site
- 6+ hours of sun, soil pH 6–7.5
- Biggest risk
- Powdery mildew
Core growing advice on this page is checked against named horticultural sources — see References.
Melon (Cucumis melo)
10 sources cited · Verified
Quick Facts
At a Glance
Diseases
Pests
Soil & Growing Conditions
Growth Stages
Harvest & Storage
Plan your Melons planting
When to sow and plant Melons depends on your own frost dates. Check the USA vegetable planting calendar, or the month-by-month guides that cover Melons: March, April, May, June, July, August, September. To work out where it fits in your beds, sketch your plot in the free Garden Layout Planner.
Growing Melon in another region
Sowing dates, frost timing and local advice differ by country. Use the guide for where you garden.
Sources
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Warm-season annual that scrambles and climbs by tendrils to 6-9ft, spreading 1-3ft. Full sun (6+ hours). Wants moist, well-drained, acidic to neutral soil enriched with organic matter; tolerates loam or clay. Sow outdoors after the last frost, or start indoors 4-6 weeks before the average last frost date. Space 12in-3ft. Monoecious, carrying male, female and some bisexual flowers on the same plant, and attractive to bees -- pollinators are needed to set fruit. Fruit ripens through August and September. Pests and diseases: cucumber beetles, powdery mildew, downy mildew, gummy stem blight, anthracnose and wilt.
These 2 sources are specific to this region. The full list of 10 sources behind this guide (Clemson Cooperative Extension, FAO EcoCrop, GBIF and others) is in the references of our UK guide to melons; they describe the plant itself, which is the same wherever it grows.
Frequently Asked Questions
What soil pH do melons need?
A pH of about 6–7.5. That span reflects genuine variation between the authorities we cite rather than a single agreed figure — the References section lists each source's exact range.
What problems affect melons?
Our data links 3 diseases and 5 pests to this crop. See the sections above for each one and how to manage it.
Plan next season before the problems start
Almost everything on this page resolves to your own frost dates rather than the calendar — the last spring frost moves by roughly two months between zone 3 and zone 10. The USA Garden Planner works from your zone so the timing is already decided before the season starts.
Get the USA Garden Planner →Instant PDF download · Written for US growing conditions
How this guide is put together
The growing data on this page — sowing windows, pests, diseases, soil and site requirements — comes from named horticultural sources, listed in References below, checked against USDA hardiness-zone and frost-date data, with Cooperative Extension sources cited directly where one exists for a crop. An automated pipeline assembles that verified data into the page you're reading: it selects which facts to lead with and builds the surrounding prose and layout. It does not invent a date, a source or a number — where a verified value for a field isn't available, the page leaves it out rather than guessing. A person reviews and publishes each page; nothing goes live unverified.
Related Problem Guides
Last verified 2026-09-02
Related guides
More from the same group (squashes & cucumbers):
Growing advice for your part of the USA
Timing and conditions change a lot inside one country. These guides cover frost dates and growing seasons region by region.
Where To Go From Here
Take this crop from reading into a written plan for your own beds.
Keep going
Plan the next step
Use the printable SoilCommander planner for your region to turn this guide into sowing dates, bed layouts and weekly garden tasks.