Cantaloupe in Zone 5a & 5b
Cucumis melo
Yes, cantaloupe grows in zones 5a and 5b. Start seeds indoors Apr 19–Apr 26 and plant out May 24–May 31.
When to plant cantaloupe in zone 5b
Zones 5a and 5b share the same average frost dates, so this page covers both.
Method: Either: Start indoors for an earlier harvest, or direct-sow outside for less fuss. Either works.
| Start indoors | Apr 19–Apr 26 |
|---|---|
| Direct sow / transplant outside | May 24–May 31 |
| Estimated harvest | Aug 12–Aug 19 (~80 days after planting) |
Spacing: about 4 square feet per plant (square-foot-gardening spacing). Mature height: 0.5-1 ft.
Plant alongside it in zone 5b
These go outside within two weeks of cantaloupe in zone 5b, so one planting day can cover them.
- TomatoMay 24–May 31
- Bush BeansMay 17–May 24
- CucumberMay 17–May 24
- ZucchiniMay 17–May 24
- Winter SquashMay 17–May 24
- BroccoliniMay 10–May 17
Cantaloupe takes up far more room than most vegetables for the yield it gives back, at a quarter plant per square foot, it needs serious space to sprawl, and a single vine won't produce nearly as much fruit as a tomato or pepper plant in the same footprint. What it does deliver, ripened on the vine, is a flavor that store-bought melons (picked underripe for shipping) rarely match.
How cantaloupe fits zone 5's season
Zone 5b's frost-free window runs about 148 days, from May 10 to October 5. Cantaloupe needs about 80 days from sowing to first harvest.
Cantaloupe planting windows in every zone
Zone 5b is highlighted. Useful for comparing against a neighbouring zone, or for a garden somewhere else.
| Zone | Start indoors | Sow or plant out | Harvest |
|---|---|---|---|
| 5a & 5b (your zone) | Apr 19–Apr 26 | May 24–May 31 | Aug 12–Aug 19 |
| 6a & 6b | Apr 4–Apr 11 | May 9–May 16 | Jul 28–Aug 4 |
| 7a & 7b | Mar 20–Mar 27 | Apr 24–May 1 | Jul 13–Jul 20 |
| 8a & 8b | Mar 4–Mar 11 | Apr 8–Apr 15 | Jun 27–Jul 4 |
| 9a & 9b | Jan 25–Feb 1 | Mar 1–Mar 8 | May 20–May 27 |
| 10a & 10bSpring window | Jan–Jun | Feb–Jul | ~80 days after transplanting |
| 11a & 11bFall window | Not usually | Dec–Mar | ~80 days after planting |
Harvest dates are about 80 days after the sow or plant-out date, not after starting seeds indoors.
Good companions
- Sweet Corn: Corn provides light afternoon shade without heavy competition for space.
Where to buy cantaloupe seeds
True Leaf Market · Burpee · High Mowing Organic Seeds (each supplier's cantaloupe seeds)
Varieties we recommend, and where to get them:
- Ambrosia: One of four resistant varieties in the same Cornell trial as Trifecta, all showing significantly better powdery mildew control than the susceptible check with no significant difference in severity between them. Buy: True Leaf Market · Burpee Full notes
See why we recommend these suppliers →
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See it growing
Search YouTube for "growing cantaloupe" videos → (a live search, not a hand-picked video; results vary and aren't vetted by us)
← Back to the full zone 5b calendar · Plan your beds in the Garden Designer →
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Growing Cantaloupe in USDA zone 5b: when to start seeds indoors, when to direct-sow, and when to expect a harvest.
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