Mattahorn F4

Mattahorn is a Matt’s Peppers original that pairs the variegated jalapeño lineage of Mattapeño with the elegant length of Thunder Mountain Longhorn, yielding a long, chef-friendly annuum with ornamental flair. Plants often show white (albino) leaf flashes early in the season—a known quirk in this line—then settle into vigorous, upright growth with steady cluster set. Pods are slender and tapered with occasional tiger-style striping in some plants, finishing a vivid kitchen red at maturity. Heat lands in the mild-to-medium, highly usable range—brighter than a sweet frying pepper, gentler than a Thai—so you can char, slice, and pickle freely. Thin walls blister quickly on a hot pan, and the long shape makes for striking ribbons in sautés and roasts. Regular harvesting keeps blossoms rolling, and a light stake helps once late-season clusters build. Because this release has been offered around the F4 stage, expect some selection room in pod length, striping intensity, and early-season variegation—perfect for seed savers. If you want a container-friendly long chile with showpiece looks and everyday utility, Mattahorn earns its peak.

Days: 75–95 (early-mid for annuum)
Species: Capsicum annuum
SHU: ~3,000–15,000 (mild–medium; selection dependent, reflecting Mattapeño × TML background)
Heat Level: Mild–Medium
Plant Size: ~24–40 inches, upright; light staking recommended late season
Pod Size: ≈5–8 inches, slender “longhorn” form; striping may appear in some plants
Color: Green (striping possible) → red; early white leaf flashes on some seedlings
Flavor: Clean annuum snap with light sweetness; chars and pickles beautifully
Creator: Matt’s Peppers — cross of Mattapeño × Thunder Mountain Longhorn (From F4 Seeds)
Seed Source: Matt's Peppers