Jalapeño Pepper in Zone 8a & 8b
Capsicum annuum
Yes, jalapeño pepper grows in zones 8a and 8b. Start seeds indoors Jan 28–Feb 4 and plant out Apr 8–Apr 15.
When to plant jalapeño pepper in zone 8b
Zones 8a and 8b 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 | Jan 28–Feb 4 |
|---|---|
| Direct sow / transplant outside | Apr 8–Apr 15 |
| Estimated harvest | Jun 19–Jun 26 (~72 days after transplanting) |
Spacing: 1 per square foot (square-foot-gardening spacing). Mature height: 2-3 ft.
Plant alongside it in zone 8b
These go outside within two weeks of jalapeño pepper in zone 8b, so one planting day can cover them.
- Bell PepperApr 8–Apr 15
- 7 Pot Douglah Pepper (Chocolate 7 Pot)Apr 8–Apr 15
- 7 Pot Primo PepperApr 8–Apr 15
- Aji Amarillo PepperApr 8–Apr 15
- Anaheim Pepper (New Mexico, Hatch)Apr 8–Apr 15
- Carolina Reaper PepperApr 8–Apr 15
Jalapeño is the hot pepper most gardeners grow first. Smoked and dried at the red stage, it becomes chipotle.
How jalapeño pepper fits zone 8's season
Zone 8b's frost-free window runs about 230 days, from March 25 to November 10. Jalapeño pepper needs about 72 days from transplant to first harvest.
Jalapeño Pepper planting windows in every zone
Zone 8b is highlighted. Useful for comparing against a neighbouring zone, or for a garden somewhere else.
| Zone | Start indoors | Sow or plant out | Harvest |
|---|---|---|---|
| 3a & 3b | Apr 4–Apr 11 | Jun 13–Jun 20 | Aug 24–Aug 31 |
| 4a & 4b | Mar 20–Mar 27 | May 29–Jun 5 | Aug 9–Aug 16 |
| 5a & 5b | Mar 15–Mar 22 | May 24–May 31 | Aug 4–Aug 11 |
| 6a & 6b | Feb 28–Mar 7 | May 9–May 16 | Jul 20–Jul 27 |
| 7a & 7b | Feb 13–Feb 20 | Apr 24–May 1 | Jul 5–Jul 12 |
| 8a & 8b (your zone) | Jan 28–Feb 4 | Apr 8–Apr 15 | Jun 19–Jun 26 |
| 9a & 9b | Dec 21–Dec 28 | Mar 1–Mar 8 | May 12–May 19 |
| 10a & 10bSpring window | Dec–Feb | Feb–Apr | ~72 days after transplanting |
| Summer window | May–Jul | Jul–Sep | ~72 days after transplanting |
| 11a & 11bSummer window | Jun–Dec | Aug–Feb | ~72 days after transplanting |
Harvest dates are about 72 days after the sow or plant-out date, not after starting seeds indoors.
Good companions
- Basil: Reputed to repel aphids and improve pepper growth nearby, but a controlled garden trial testing this same claim on a related crop found no pest-reduction benefit from basil, and found higher pest counts on the basil-companioned plants. Treat this pairing as unproven, not as a working pest deterrent.
- Onion: Reputed to deter many common pepper pests, though this specific pairing hasn't been tested the way onion/carrot pest-masking has. Treat it as garden tradition.
Where to buy jalapeño pepper seeds
Botanical Interests · True Leaf Market · Burpee · High Mowing Organic Seeds (each supplier's jalapeño pepper seeds)
See why we recommend these suppliers →
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See it growing
Search YouTube for "growing jalapeño pepper" videos → (a live search, not a hand-picked video; results vary and aren't vetted by us)
← Back to the full zone 8b calendar · Plan your beds in the Garden Designer →
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Growing Jalapeño Pepper in USDA zone 8b: when to start seeds indoors, when to direct-sow, and when to expect a harvest.
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