Superhot Pepper (Ghost, Reaper, Scorpion) in Zone 3a & 3b
Capsicum chinense
Superhot pepper (Ghost, Reaper, Scorpion) can grow in zones 3a and 3b, but its usual harvest starts after the average first frost, so it takes an early variety and frost protection. Start seeds indoors Mar 14–Mar 21 and plant out Jun 13–Jun 20.
When to plant superhot pepper (Ghost, Reaper, Scorpion) in zone 3b
Zones 3a and 3b 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 14–Mar 21 |
|---|---|
| Direct sow / transplant outside | Jun 13–Jun 20 |
| Estimated harvest | Oct 26–Nov 2 (~135 days after transplanting) |
Spacing: 1 per square foot (square-foot-gardening spacing). Mature height: 2-3 ft.
Before you plant: Zone 3b's first fall frost usually comes close to or before the harvest. See the details below.
Plant alongside it in zone 3b
These go outside within two weeks of superhot pepper (Ghost, Reaper, Scorpion) in zone 3b, so one planting day can cover them.
- Bell PepperJun 13–Jun 20
- 7 Pot Douglah Pepper (Chocolate 7 Pot)Jun 13–Jun 20
- 7 Pot Primo PepperJun 13–Jun 20
- Aji Amarillo PepperJun 13–Jun 20
- Anaheim Pepper (New Mexico, Hatch)Jun 13–Jun 20
- Carolina Reaper PepperJun 13–Jun 20
Superhot peppers (Ghost, Reaper, Scorpion, and their relatives) are a different commitment than a standard pepper plant. Days to maturity commonly runs 120-150+ days versus roughly 75-100 for a regular hot pepper, and germination itself is slower and far less consistent, sometimes taking 2-6 weeks instead of the usual week or so. Start these far earlier than you'd think to.
How superhot pepper (Ghost, Reaper, Scorpion) fits zone 3's season
Zone 3b's frost-free window runs about 98 days, from May 30 to September 5. Superhot pepper (Ghost, Reaper, Scorpion) needs about 135 days from transplant to first harvest.
Frost risk in zone 3b: Harvest usually starts about 51 days after zone 3b's average first frost (September 5), and superhot pepper (Ghost, Reaper, Scorpion) is damaged by even a light frost. Expect frost to arrive first in most years unless you choose the fastest-maturing variety you can find, start it as early as the dates above allow, and cover plants on cold nights. (Frost tolerance and protection advice: Purdue Extension.)
Superhot Pepper (Ghost, Reaper, Scorpion) planting windows in every zone
Zone 3b 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 (your zone) | Mar 14–Mar 21 | Jun 13–Jun 20 | Oct 26–Nov 2 |
| 4a & 4b | Feb 27–Mar 6 | May 29–Jun 5 | Oct 11–Oct 18 |
| 5a & 5b | Feb 22–Mar 1 | May 24–May 31 | Oct 6–Oct 13 |
| 6a & 6b | Feb 7–Feb 14 | May 9–May 16 | Sep 21–Sep 28 |
| 7a & 7b | Jan 23–Jan 30 | Apr 24–May 1 | Sep 6–Sep 13 |
| 8a & 8b | Jan 7–Jan 14 | Apr 8–Apr 15 | Aug 21–Aug 28 |
| 9a & 9b | Nov 30–Dec 7 | Mar 1–Mar 8 | Jul 14–Jul 21 |
| 10a & 10bSummer window | May–Jul | Aug–Sep | ~135 days after transplanting |
| 11a & 11bSummer window | May–Nov | Aug–Feb | ~135 days after transplanting |
Harvest dates are about 135 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 superhot pepper seeds
Varieties we recommend, and where to get them:
- Bhut Jolokia (Ghost Pepper): The variety that started the modern superhot craze, rated just over 1 million Scoville units by Sandia Seed, at 110 days from transplant, squarely in the standard 120-150+ day range Reaper and Trinidad Scorpion Yellow are both faster than. Buy: Botanical Interests · True Leaf Market Full notes
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See it growing
Search YouTube for "growing superhot pepper (Ghost, Reaper, Scorpion)" videos → (a live search, not a hand-picked video; results vary and aren't vetted by us)
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Growing Superhot Pepper (Ghost, Reaper, Scorpion) in USDA zone 3b: when to start seeds indoors, when to direct-sow, and when to expect a harvest.
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