Superhot Pepper (Ghost, Reaper, Scorpion) in Zone 10a & 10b

Capsicum chinense

When to plant superhot pepper (ghost, reaper, scorpion) in zone 10b

Zones 10a and 10b share the same average frost dates in our data, so this page covers both.

Method: Start indoors: Start indoors from seed, then transplant outside. Superhot Pepper (Ghost, Reaper, Scorpion) needs a head start most zones can't give it by direct-sowing alone.

Window	Monsoon window
Start indoors	May–Jul
Direct sow / transplant outside	Aug–Sep
Estimated harvest	Dec 14–Feb 12 '27 (~135 days after transplanting)

Spacing: 1 per square foot (square-foot-gardening spacing). Mature height: 2-3 ft.

Zone 10b dates sourced from growinginthegarden.com.

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 10's season

Zone 10b's frost-free window runs about 324 days, from January 30 to December 20. Superhot Pepper (Ghost, Reaper, Scorpion) needs about 135 days from transplant to first harvest.

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 actually 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

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