Cucamelon in Zone 6a & 6b
Melothria scabra
Yes, cucamelon grows in zones 6a and 6b. Start seeds indoors Mar 28–Apr 4 and plant out May 9–May 16.
When to plant cucamelon in zone 6b
Zones 6a and 6b share the same average frost dates, so this page covers both.
Method: Start indoors: Start indoors from seed, then transplant outside. It needs a head start most zones can't give it by direct-sowing alone.
| Start indoors | Mar 28–Apr 4 |
|---|---|
| Direct sow / transplant outside | May 9–May 16 |
| Estimated harvest | Jul 18–Jul 25 (~70 days after transplanting) |
Spacing: 1 per square foot (square-foot-gardening spacing). Mature height: 8-13.5 ft.
Plant alongside it in zone 6b
These go outside within two weeks of cucamelon in zone 6b, so one planting day can cover them.
- TomatoMay 9–May 16
- Bush BeansMay 2–May 9
- Sweet CornMay 2–May 9
- CucumberMay 2–May 9
- ZucchiniMay 2–May 9
- Winter SquashMay 2–May 9
Cucamelon is one of the few crops here where the fruit is a novelty and the plant is not. It grows like a small, determined cucumber and it climbs hard.
How cucamelon fits zone 6's season
Zone 6b's frost-free window runs about 173 days, from April 25 to October 15. Cucamelon needs about 70 days from transplant to first harvest.
Cucamelon planting windows in every zone
Zone 6b is highlighted. Useful for comparing against a neighbouring zone, or for a garden somewhere else.
| Zone | Start indoors | Sow or plant out | Harvest |
|---|---|---|---|
| 4a & 4b | Apr 17–Apr 24 | May 29–Jun 5 | Aug 7–Aug 14 |
| 5a & 5b | Apr 12–Apr 19 | May 24–May 31 | Aug 2–Aug 9 |
| 6a & 6b (your zone) | Mar 28–Apr 4 | May 9–May 16 | Jul 18–Jul 25 |
| 7a & 7b | Mar 13–Mar 20 | Apr 24–May 1 | Jul 3–Jul 10 |
| 8a & 8b | Feb 25–Mar 4 | Apr 8–Apr 15 | Jun 17–Jun 24 |
| 9a & 9b | Jan 18–Jan 25 | Mar 1–Mar 8 | May 10–May 17 |
| 10a & 10b | Jan 2–Jan 9 | Feb 13–Feb 20 | Apr 24–May 1 |
| 11a & 11b | Dec 4–Dec 11 | Jan 15–Jan 22 | Mar 26–Apr 2 |
Harvest dates are about 70 days after the sow or plant-out date, not after starting seeds indoors.
Good companions
No well-established companions for cucamelon.
Where to buy cucamelon seeds
True Leaf Market (each supplier's cucamelon seeds)
See why we recommend these suppliers →
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See it growing
Search YouTube for "growing cucamelon" videos → (a live search, not a hand-picked video; results vary and aren't vetted by us)
← Back to the full zone 6b calendar · Plan your beds in the Garden Designer →
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Growing Cucamelon in USDA zone 6b: when to start seeds indoors, when to direct-sow, and when to expect a harvest.
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