HotPepperIndex
Capsicum annuum

Big Jim Chile

New Mexico, United States
Mild
Also known asNuMex Big Jim · New Mexico Big Jim · Big Jim
Scoville
0SHU
Heat0%
500–3k SHU · Wikipedia and PepperScale entries

The Big Jim Chile, officially NuMex Big Jim, is a giant mild New Mexico chile developed in 1975 at New Mexico State University. Renowned for pods up to 14 inches long with thick walls and bright sweet flavor, it excels in chiles rellenos and roasted green chile dishes.

Developed by Dr. Roy Nakayama at New Mexico State University in cooperation with grower Jim Lytle as a hybrid of native New Mexican chiles and a Peruvian pepper, the Big Jim Chile produces exceptionally large, conical pods that routinely reach 7 to 12 inches in length and up to 3 inches wide, with some specimens exceeding 14 inches and once holding the Guinness World Record for the largest chile pod at 13.5 inches. The peppers mature from vibrant green to deep red, featuring thick, meaty walls and a mildly spicy heat that varies from 500 to 3,000 Scoville Heat Units, with most fruits very mild around 500 SHU and occasional ones reaching medium levels. Their flavor is bright, sweet, and savory, intensifying slightly in sweetness when ripened red while remaining family-friendly. Vigorous plants grow 24 to 36 inches tall, yielding 24 to 30 pods each, and are a staple in New Mexican cuisine for roasting, stuffing, salsas, grilling, and drying into decorative ristras. A later heritage selection restores even more traditional flavor with higher yields.

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Backstory

The Big Jim Chile was created in 1975 at New Mexico State University's Chile Pepper Institute by Dr. Roy Nakayama in partnership with local grower Jim Lytle. Bred for larger size, better yields, and to preserve traditional New Mexico chile flavors, it was named in honor of Jim Lytle. It quickly became popular for its record-breaking pods and is extensively grown in New Mexico. A heritage version was later developed from stored seeds to restore even more authentic flavor, higher yield, and longer pods.

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Flavor

Bright and sweet when green, becoming slightly hotter and sweeter when ripened to red; rich, savory taste enhanced by roasting with meaty texture ideal for stuffing.

brightsweetmildly spicysavorymeaty

Culinary uses

chiles rellenosroasted green chilestuffed pepperssalsasgrillingristras

Q&A

Substitutions

Anaheim pepperHatch green chilebell pepper

Related variants

Appearance

Skin
smooth and glossy
Color
Green when immature, deep red when ripe
Shape
conical, tapered
Walls
thick and meaty
Pod width
2-3 inches
Pod length
7-14 inches (average 10-12 inches)

Growing

Sun
Full sun, 8-12 hours daily
Soil
Well-draining, fertile, pH 6.0-7.0
Notes
Start seeds indoors 8-12 weeks before last frost in warm soil; stake plants due to heavy fruit load; thrives in warm climates; suitable for large containers (5+ gallons)
Water
Consistent deep watering; mulch to retain moisture
Plant height
24-36 inches
Plant spacing
14-18 inches apart
Days to maturity
70-90 days

Origin detail

Region
New Mexico
Country
United States
Breeder
New Mexico State University (Dr. Roy Nakayama with Jim Lytle)

Tags

mildlarge podsnew mexico chilechiles rellenosheirloomannuum

Sources

Huge shout-out to the breeders, growers, researchers, and seed savers linked below — their independent work is what lets us fact-check our own. Go visit them.

These references are used to verify what we publish — not as the source of the content itself. Seed catalogs, breeder pages, research papers, and cultivar databases let us cross-check every fact before it lands here. Open any card to read the original or dig deeper.

4 sources · Added May 12, 2026, 09:08 UTC
Origins
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