Jamaican Mushroom Yellow

Jamaican Mushroom Yellow, usually traded online as Jamaican Yellow Mushroom, is a compact, squash-shaped hot pepper line associated with Jamaica and the wider Caribbean. The strongest exact-name live descriptions agree on small, flattened, wrinkled pods around 5.0 cm long and 3.0 cm across, with a fruity, citrus-forward flavour and strong heat. A matching Cornell entry for “Jamaican Yellow” describes very compact, densely foliaged plants with thin-walled, mushroom-shaped fruit, while other live listings place plant height anywhere from about 60 cm to 120 cm, so the plant is best understood as compact to medium rather than tall and sprawling. It is also traded under other names including Jamaican Hot Yellow and Yellow Squash.

Culturally, the live sources line up well. This pepper is repeatedly tied to Jamaican and Caribbean use in hot sauces and jerk seasoning, where its fruity heat is treated as a useful substitute when a bright, citrusy pepper is wanted. That cultural association is one of the most consistent parts of the live search results.

The part that does not line up cleanly online is identity. Exact-name sources split between Capsicum annuum and Capsicum chinense, and some growers have been arguing about that for years. Cornell’s “Jamaican Yellow” entry even labels the matching type as a hybrid, while seed sellers also market it as heirloom. Grower discussions from 2011 onward already show the same confusion, especially with this pepper being mistaken for Scotch Bonnet because of the pod shape. So the plant itself is real and recognisable, but the seed-trade naming and taxonomy around it are messy.

Heat is also not perfectly fixed in live sources. The most repeated exact-name range is about 100,000 to 200,000 SHU, while other listings widen that to 100,000 to 300,000 or even 200,000 to 325,000. The 150,000 SHU value used here is a midpoint trade estimate rather than a lab-tested fixed figure.