Chiltepin Pepper

Start seeds indoors 8 to 10 weeks before your last spring frost. Sow seeds 1/4 inch deep in seed-starting mix kept consistently moist and warm at 70 to 85 degrees Fahrenheit. Provide bottom heat if possible to speed germination, which typically takes 7 to 14 days. Once seedlings have true leaves, provide bright light and cool nights to prevent leggy growth.

Harden off seedlings over 7 to 10 days by gradually exposing them to outdoor conditions, starting with dappled shade and working toward full sun. Transplant outdoors after your last frost date when soil temperatures consistently reach 60 degrees Fahrenheit or warmer. Space plants 18 inches apart in rows 36 inches apart, or 18 inches from neighbors in containers. Water thoroughly after transplanting.

Chiltepin peppers are ready to harvest when they fully ripen from green to a bright, vibrant red, typically 100 to 109 days after transplanting (though some sources report as few as 95 days). Pick peppers when they feel firm and have achieved their full red color; the heat and flavor intensify at full maturity. Use scissors or a sharp knife to cleanly remove peppers, as the stems are wiry and tough. Harvest regularly to encourage continued production throughout the season.

Pinch out the growing tip when seedlings reach 6 inches tall to encourage bushier, more compact growth. Once plants are established and flowering, minimal pruning is needed; simply remove any dead wood or damaged branches. In warm climates where plants may persist as perennials, you can prune harder in late winter to rejuvenate woody stems and stimulate fresh fruiting.