Naga Viper Pepper in Zone 5a & 5b
Capsicum chinense
Yes, Naga Viper pepper grows in zones 5a and 5b. Start seeds indoors Feb 22–Mar 1 and plant out May 24–May 31.
When to plant Naga Viper pepper in zone 5b
Zones 5a and 5b 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 | Feb 22–Mar 1 |
|---|---|
| Direct sow / transplant outside | May 24–May 31 |
| Estimated harvest | Sep 1–Sep 8 (~100 days after transplanting) |
Spacing: 1 per square foot (square-foot-gardening spacing). Mature height: 2-3 ft.
Plant alongside it in zone 5b
These go outside within two weeks of Naga Viper pepper in zone 5b, so one planting day can cover them.
- Bell PepperMay 24–May 31
- 7 Pot Douglah Pepper (Chocolate 7 Pot)May 24–May 31
- 7 Pot Primo PepperMay 24–May 31
- Aji Amarillo PepperMay 24–May 31
- Anaheim Pepper (New Mexico, Hatch)May 24–May 31
- Carolina Reaper PepperMay 24–May 31
Naga Viper was bred in Cumbria, England, from Naga Morich, Bhut Jolokia and Trinidad Scorpion parents, according to Reimer Seeds. It briefly held the title of the world's hottest pepper before the scorpions and the Reaper overtook it.
How Naga Viper pepper fits zone 5's season
Zone 5b's frost-free window runs about 148 days, from May 10 to October 5. Naga Viper pepper needs about 100 days from transplant to first harvest.
Naga Viper Pepper 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 |
|---|---|---|---|
| 3a & 3b | Mar 14–Mar 21 | Jun 13–Jun 20 | Sep 21–Sep 28 |
| 4a & 4b | Feb 27–Mar 6 | May 29–Jun 5 | Sep 6–Sep 13 |
| 5a & 5b (your zone) | Feb 22–Mar 1 | May 24–May 31 | Sep 1–Sep 8 |
| 6a & 6b | Feb 7–Feb 14 | May 9–May 16 | Aug 17–Aug 24 |
| 7a & 7b | Jan 23–Jan 30 | Apr 24–May 1 | Aug 2–Aug 9 |
| 8a & 8b | Jan 7–Jan 14 | Apr 8–Apr 15 | Jul 17–Jul 24 |
| 9a & 9b | Nov 30–Dec 7 | Mar 1–Mar 8 | Jun 9–Jun 16 |
| 10a & 10bSummer window | May–Jul | Aug–Sep | ~100 days after transplanting |
| 11a & 11bSummer window | May–Nov | Aug–Feb | ~100 days after transplanting |
Harvest dates are about 100 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 Naga Viper pepper seeds
None of the seed suppliers we list carries Naga Viper pepper seeds right now. A local garden center or a specialty seed house is the place to look.
See why we recommend these suppliers →
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See it growing
Search YouTube for "growing Naga Viper pepper" 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 Naga Viper Pepper in USDA zone 5b: when to start seeds indoors, when to direct-sow, and when to expect a harvest.
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