How to Grow Cucamelons USA

By the SoilCommander Editorial Team, under the guidance of Nitin Sharma, Co-Founder · · How we check our facts

On this page
  1. Cucamelon (Melothria scabra)
  2. Growth Stages
  3. Quick Facts
  4. At a Glance
  5. Harvest & Storage
  6. Pests
  7. Plan your Cucamelons planting
  8. Growing Cucamelon in another region
  9. Sources
  10. Frequently Asked Questions

In the US, cucamelons are ready to harvest 70–75 days after planting.

Unlike an annual crop, the work here is front-loaded into establishment: get the planting and the site right and the same plants crop for several seasons.

The short answer

Ready in
70–75 days
Site
6+ hours of sun

Core growing advice on this page is checked against named horticultural sources — see References.

Cucamelon (Melothria scabra)

A tiny yellow cucamelon flower on the vine — “Melothria scabra florescence” by User:Tigerente is licensed under CC BY-SA 3.0.

4 sources cited · Verified

Growth Stages

A tiny yellow cucamelon flower on the vine
A tiny yellow cucamelon flower on the vine. Photo: “Melothria scabra florescence” by User:Tigerente, CC BY-SA 3.0.
Stage BBCH Notes
Sowing and germination 0 Sow 3-4 seeds 1cm deep into a 9cm pot in spring, germinate at 72-75°F (22-24°C), taking about 10 days; pot on individually once seedlings have 3 true leaves (RHS).
Planting out and establishment 1 Plant out in a sunny, sheltered position once frost risk has passed, spaced 30-40cm apart, with netting or canes in place for the climbing tendrils (RHS).
Climbing growth and flowering 6 Vigorous climber via double-spiralled tendrils; small yellow flowers appear in summer. Water regularly and feed fortnightly with liquid tomato fertiliser (RHS).
Fruiting and harvest 8 Small olive-shaped, watermelon-patterned fruit forms in late summer and early autumn; pick young and often for the best crunchy, cucumber-sour flavour (RHS).

Quick Facts

Harvested cucamelon fruit showing their watermelon-like pattern
Harvested cucamelon fruit showing their watermelon-like pattern. Photo: “Cam 2020-10-26 08-27-08 (50535399982)” by Steve Rainwater from Irving, US, CC BY-SA 2.0.
Factor Value
Sunlight 6-6 hours direct sun
Germination temp 72°F (22°C)
Minimum survivable temp 50°F (10°C)
Time to harvest 70-75 days
Drainage Moist but well-drained
Lifecycle perennial
Edible parts fruit

At a Glance

A cucamelon fruit sliced in half showing its cucumber-like interior
A cucamelon fruit sliced in half showing its cucumber-like interior. Photo by R. O. Gardner, CC BY 4.0.
Melothria scabra Cucamelon Slugs PESTS

Harvest & Storage

A bowl full of harvested cucamelon fruit
A bowl full of harvested cucamelon fruit. Photo by Corey Ryan Hanson (SoFuego), CC0.

When to pick: Wisconsin Extension: "Most seed packets indicate 70-75 days to harvest, with the plants producing from mid-summer until first frost". Young tender fruits best eaten raw; older fruits with more developed seeds better for pickling.

Storage

Best used fresh

Pests

A young cucamelon fruit forming on the vine
A young cucamelon fruit forming on the vine. Photo: “Melothria scabra fruit” by User:Tigerente, CC BY-SA 3.0.
Slugs

Gastropoda (slugs, various spp.)

Plan your Cucamelons planting

When to sow and plant Cucamelons depends on your own frost dates. Check the USA vegetable planting calendar. To work out where it fits in your beds, sketch your plot in the free Garden Layout Planner.

Growing Cucamelon in another region

Sowing dates, frost timing and local advice differ by country. Use the guide for where you garden.

Sources

These source is specific to this region. The full list of 4 sources behind this guide (GBIF, Royal Horticultural Society, University of Wisconsin-Madison Division of Extension) is in the references of our UK guide to cucamelons; they describe the plant itself, which is the same wherever it grows.

Frequently Asked Questions

How long do cucamelons take to grow?

Typically 70–75 days, depending on cultivar and growing conditions.

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

SoilCommander Editorial Team — under the guidance of Nitin Sharma, Co-Founder

Every growing guide is checked against RHS, USDA Cooperative Extension, and other named horticultural authorities before publishing. How we check our facts.

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.

Vegetable Growing Guides USA

Crops With the Same Problems

Related Problem Guides

Last verified 2026-09-02

Related guides

More from the same group (squashes & cucumbers):

Relevant next steps

Where To Go From Here

Take this crop from reading into a written plan for your own beds.

USA garden plannerTurn this crop guide into sowing dates, bed layouts and a harvest record. All growing guidesBrowse every crop we cover for your region, A to Z. Planting CalendarSee how this crop fits alongside everything else you are growing.

Keep going

This guide in another region
Global UK USA Canada
Top tips for October
  • Plant garlic before hard frosts
  • Protect late salads with fleece
  • Store squash somewhere dry
  • Mulch empty beds
Free Tool
soilcommander.com/pages/vegetable-garden-layout-planner-tool
1 · Shape
2 · Crops
3 · Conditions
4 · Plan
Choose your garden shape
🍅
Bed 1
Tomatoes
🍌
Bed 2
Legumes
🥦
Bed 3
Brassicas
🥕
Bed 4
Roots
🥥
Bed 5
Alliums
🌿
Herbs & More

Free planning tool

Plan your veg garden before you dig a single inch

Sketch your exact plot shape, pick your crops, and get a spacing-accurate bed layout with companion pairings and a rotation plan. Spacing, companion pairings and rotation work the same in any climate — pair the layout it gives you with the USA planting calendar for your own frost-date timing.

Garden Layout Planner Tool

Free to use. Nothing to install.

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.

Get Planner