When to plant chili peppers in Indiana
Indiana’s average last spring frost is April 24, and the first fall frost typically arrives around October 11 — about 170 frost-free days (USDA zones 5b, 6a, 6b). Chili Pepper needs 70–100 days to mature, which fits comfortably within Indiana's growing season.
When to plant chili peppers in Indiana: the short answer
For a spring planting, plant out May 1 – May 18, with seeds started indoors Feb 20 – Mar 6. Wait until the soil is at least 65°F and frost is over.
Windows are ~1–2 week bands around each date. Frost dates are a statewide average from NOAA/NCEI normals; your town may differ by two weeks or more. Calendar year 2026.
How to grow chili peppers in Indiana, step by step
- Start seeds indoors (Feb 20 – Mar 6). Sow seeds ¼ inch deep in seed-starting mix under bright light. They take 7-21 days to sprout, fastest in soil around 85°F. Harden seedlings off for a week before they go outside.
- Prepare the bed. They need at least six to eight hours of direct sun a day and loose soil at least 12 inches deep, with a pH between 5.5 and 7.0. Dig in compost before planting.
- Plant out (May 1 – May 18). Space plants about 18 inches apart in rows 24 inches apart. It is killed by frost, so nothing goes outside until the danger has passed.
- Water and feed. Give it steady, even moisture, about an inch of water a week from rain or the hose.
- Watch for pests and problems. Pests: aphids, flea beetle, pepper maggot, spider mite. Diseases and disorders: bacterial leaf spot, anthracnose, phytophthora blight.
- Harvest (from about Jul 17 – Aug 16). Chili Pepper takes 70-100 days to reach harvest. Superhots (C. chinense) can need 100+ days and the longest indoor start. Withholding some water late raises heat.
Figures come from our crop data; dates use Indiana’s average frost dates. More in the full chili pepper growing guide.
Chili Pepper planting dates by USDA zone in Indiana
Indiana spans USDA zones 5b, 6a, 6b. Colder zones, usually higher or further inland, have a later last spring frost and an earlier first fall frost than the state average, so the chili pepper dates shift with them.
When to plant chili peppers in nearby states
Questions gardeners in Indiana ask
When is the best time to plant chili peppers in Indiana?
Plant chili pepper transplants outdoors in Indiana between May 1 and May 18. That timing is set by Indiana's average last spring frost of April 24.
When should I start chili pepper seeds indoors in Indiana?
Start seeds indoors between February 20 and March 6, about 8 weeks before the last frost, so the seedlings are ready to plant out from May 1.
What is the latest I can plant chili peppers in Indiana?
About August 2. Chili peppers need at least 70 days to mature after transplanting, and frost around October 11 ends the season, so later plantings risk being cut short.
When will chili peppers planted in Indiana be ready to harvest?
Planted on time, chili peppers are usually ready from about July 17 to August 16, 70-100 days after transplanting.
When is the last frost in Indiana?
On average around April 24, with the first fall frost around October 11 - about 170 frost-free days. Your town may differ by two weeks or more.