Guajillo Pepper (Mirasol) in Zone 7a & 7b
Capsicum annuum
Yes, guajillo pepper (mirasol) grows in zones 7a and 7b. Start seeds indoors Feb 13–Feb 20 and plant out Apr 24–May 1.
When to plant guajillo pepper (mirasol) in zone 7b
Zones 7a and 7b 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 13–Feb 20 |
|---|---|
| Direct sow / transplant outside | Apr 24–May 1 |
| Estimated harvest | Jul 8–Jul 15 (~75 days after transplanting) |
Spacing: 1 per square foot (square-foot-gardening spacing). Mature height: 1-2 ft.
Plant alongside it in zone 7b
These go outside within two weeks of guajillo pepper (mirasol) in zone 7b, so one planting day can cover them.
- Bell PepperApr 24–May 1
- 7 Pot Douglah Pepper (Chocolate 7 Pot)Apr 24–May 1
- 7 Pot Primo PepperApr 24–May 1
- Aji Amarillo PepperApr 24–May 1
- Anaheim Pepper (New Mexico, Hatch)Apr 24–May 1
- Carolina Reaper PepperApr 24–May 1
Guajillo is the dried form of the mirasol chile, a smooth, tapered pepper that ripens deep red. Dried guajillo is one of the most used chiles in Mexican red sauces and adobos.
How guajillo pepper (mirasol) fits zone 7's season
Zone 7b's frost-free window runs about 198 days, from April 10 to October 25. Guajillo pepper (mirasol) needs about 75 days from transplant to first harvest.
Guajillo Pepper (Mirasol) planting windows in every zone
Zone 7b 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 27–Sep 3 |
| 4a & 4b | Mar 20–Mar 27 | May 29–Jun 5 | Aug 12–Aug 19 |
| 5a & 5b | Mar 15–Mar 22 | May 24–May 31 | Aug 7–Aug 14 |
| 6a & 6b | Feb 28–Mar 7 | May 9–May 16 | Jul 23–Jul 30 |
| 7a & 7b (your zone) | Feb 13–Feb 20 | Apr 24–May 1 | Jul 8–Jul 15 |
| 8a & 8b | Jan 28–Feb 4 | Apr 8–Apr 15 | Jun 22–Jun 29 |
| 9a & 9b | Dec 21–Dec 28 | Mar 1–Mar 8 | May 15–May 22 |
| 10a & 10bSpring window | Dec–Feb | Feb–Apr | ~75 days after transplanting |
| Summer window | May–Jul | Jul–Sep | ~75 days after transplanting |
| 11a & 11bSummer window | Jun–Dec | Aug–Feb | ~75 days after transplanting |
Harvest dates are about 75 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 guajillo pepper seeds
Botanical Interests (guajillo pepper seeds)
See why we recommend these suppliers →
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See it growing
Search YouTube for "growing guajillo pepper (mirasol)" videos → (a live search, not a hand-picked video; results vary and aren't vetted by us)
← Back to the full zone 7b calendar · Plan your beds in the Garden Designer →
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Growing Guajillo Pepper (Mirasol) in USDA zone 7b: when to start seeds indoors, when to direct-sow, and when to expect a harvest.
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