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How to Grow Fresno Pepper From Seed

By Maxim Kaufman — Founder & CEO, Organo Republic

Updated July 2026

Fresno is a glossy, conical chile that looks like a jalapeno but ripens from green to bright red with a fruitier, slightly hotter bite. At roughly 2,500 to 10,000 Scoville heat units it sits in the same friendly medium range as a jalapeno, making it a versatile all-purpose cooking pepper. Pick it green for a crisp, grassy heat or ripen it red for a sweeter, smokier flavor.

This is the quick guide to Fresno. For the full step-by-step on starting seeds, transplanting, feeding, and troubleshooting peppers, see our complete guide to growing peppers from seed.

Quick start

Start seeds indoors about 8 weeks before your last frost, kept warm at 75 to 85F. Harden the plants off, then transplant them out 18 to 24 inches apart once nights stay above 55F. Give full sun, steady water, and a stake or cage. Pick peppers green from about 70 to 80 days, or leave them on the plant to ripen glossy bright red and sweeter.

Best tip

Fresno looks like a jalapeno but ripens to bright red with a fruitier, slightly hotter bite, and it loves heat and sun. Start seeds indoors early and transplant only once nights stay above 55F. The peppers are usable green but really come into their own ripened glossy red, so be patient. In hot-summer areas keep the plants evenly watered to prevent blossom drop and to keep the flavor sweet rather than harsh.

At a glance

How to Grow Fresno Pepper From Seed — growing specifications at a glance
Botanical name	Capsicum annuum
Plant type	Warm-season annual
USDA zones	3 to 12 (grown as an annual)
Sun	Full sun (6 to 8+ hours)
Days to maturity	70 to 80 days green; ~90 red
Height	24 to 30 inches
Spacing	18 to 24 inches apart
Water	Regular and deep; keep evenly moist

Uses

Fresno is a versatile cooking chile, similar to a jalapeno but brighter and fruitier as it reddens. Use green Fresnos for a crisp, grassy heat in salsas and pickles, or ripe red ones for a sweeter, smokier flavor in hot sauces, chili, and roasted dishes. The thin walls make them quick to roast and easy to slice fresh over tacos, eggs, and grilled meats for a lively medium kick.

Frequently asked questions

How long does a Fresno pepper take to grow?

Fresno peppers are usually pickable green about 70 to 80 days after transplanting, and ripen to bright red roughly 2 weeks later. Start seeds indoors 8 weeks before your last frost for the strongest plants.

How hot is a Fresno pepper?

Fresno peppers run about 2,500 to 10,000 Scoville heat units, roughly the same as a jalapeno but often a touch hotter and fruitier, especially once they ripen to red. It is a friendly medium heat.

What is the difference between a Fresno and a jalapeno?

They look similar when green, but Fresnos are typically ripened to bright red with thinner walls and a fruitier, slightly hotter flavor. Jalapenos are usually eaten green with thicker walls. Fresnos shine fresh and in hot sauces.

When do I pick Fresno peppers?

Pick Fresnos green for a crisp, grassy medium heat, or wait until they turn glossy bright red for a sweeter, fruitier, slightly hotter flavor. Red Fresnos are the classic choice for hot sauces and salsas.

Ready to grow your own? Fresno seeds give you glossy peppers that ripen from green to bright red with a fruity medium heat. For the full step-by-step, see our complete pepper growing guide linked at the top of this page.

Fresno Pepper Seeds – Non-GMO HeirloomHeirloom, non-GMOHeirloom Fresno chile — bright, fruity heat that ripens from green to red.

Price$4.99

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Want more peppers? These value packs pair Fresno with other sweet and hot varieties:

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Pepper Seeds Variety Pack – Non-GMO Heirloom13 super-hot varietiesThirteen fiery chilis for heat lovers, from habanero to the hottest peppers we carry.

Price$19.99Starting at$16.99

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By Maxim Kaufman — Founder & CEO, Organo Republic

Maxim founded Organo Republic in 2017 and personally selects, tests, and grows the heirloom, non-GMO varieties the company offers. Under his leadership, Organo Republic was named Agri Business Review’s Top Non-GMO Seed Variety Solution 2026.