Cucumber in Zone 8a & 8b
Cucumis sativus
When to plant cucumber in zone 8b
Zones 8a and 8b share the same average frost dates in our data, so this page covers both.
Method: Either: Start indoors for an earlier harvest, or direct-sow outside for less fuss. Cucumber tolerates either.
| Start indoors | Mar 4–Mar 11 |
|---|---|
| Direct sow / transplant outside | Apr 1–Apr 8 |
| Estimated harvest | May 26–Jun 2 (~55 days after planting) |
Spacing: 2 per square foot (square-foot-gardening spacing). Mature height: 5-6 ft.
Cucumbers are vigorous vines, and the single best decision you can make for them is giving them something to climb. A trellised cucumber uses a fraction of the ground space of one left to sprawl, gets better airflow (which means fewer fungal problems), and tends to grow straighter fruit since it isn't resting on the ground.
How cucumber fits zone 8's season
Zone 8b's frost-free window runs about 230 days, from March 25 to November 10. Cucumber needs about 55 days from sowing to first harvest.
Good companions
- Bush Beans: Beans fix nitrogen that heavy-feeding cucumbers use.
- Radish: Reputed as a trap crop for cucumber beetles, but the documented trap-crop research for cucumber beetles points to Blue Hubbard squash specifically, not radish. Radish IS a real, documented trap crop, but for flea beetles on brassica crops — a different pest and crop pairing than this one. Treat this specific pairing as garden tradition, not measured evidence.
Where to buy cucumber seeds
See why we recommend these suppliers →
As an Amazon Associate we earn from qualifying purchases. Some links on this page also go to other retailers we may earn a commission from as an affiliate, at no extra cost to you. We only recommend products with a genuine consensus of positive, independent reviews. See the sources cited on each item.
See it growing
Search YouTube for "growing cucumber" videos → (a live search, not a hand-picked video; results vary and aren't vetted by us)
← Back to the full zone 8b calendar · Full companion planting guide · Full plant profile · Plan your beds in the Garden Designer →
Pin this for later
Growing Cucumber in USDA zone 8b: when to start seeds indoors, when to direct-sow, and when to expect a harvest.
Save to Pinterest