Cilantro
What Plant Yet? knows about cilantro, and where each number comes from. For today's answer, pick your town.
Planting numbers
- Plant outdoors
- On the typical last frost date Source: Utah State University Extension
- Start seeds indoors
- 4–6 weeks before planting out Source: Utah State University Extension
Left out because we found no university extension source for it: frost category, minimum night temperature, cold-damage temperature, days to harvest. We don't estimate.
Growing tips
- A cool-season herb for full sun and well-drained soil. (Utah State University Extension)
- For leaves, pick slow-bolting varieties. (Utah State University Extension)
- In cooler areas, plant in early spring for summer-to-fall harvest. (Utah State University Extension)
- Mulch as soon as seedlings emerge to keep weeds down. (Utah State University Extension)
How the answer uses this
The planting window opens on the typical last frost date in your town; no source gives a last planting date, so it runs to the typical first fall frost. No source gives a cold limit for cilantro, so it never gets a Plant answer — only its dates.
Sources
- Utah State University Extension — checked Nov 11, 2026
Guidance only. Extension advice is written for typical conditions; your soil, variety and microclimate matter.