A Scoville number on a seed packet is a tasting-panel average, not that plant in your pot. Three published jalapeño bands overlap. That overlap is the story. Stressing a plant will not push it into another species. Read the grower notes next to the cited bands.

Worked example: jalapeño

Ask three hosts what a jalapeño is and you get three honest answers that refuse a single SHU. IFAS treats it as a mild-hot garden pepper with cultivar bands. UF/IFAS gardening language stays in types, not lab units. Penn State says you cannot force heat by drought or neglect. Believe the overlap. Print a range, or print nothing.

HostWhat they print
IFAS TR010 / peppers pagesCultivar bands. Jalapeño as a mild-hot garden pepper.
UF/IFAS PeppersGarden heat language for common types.
Penn State Growing Hot PeppersHeat as a range you cannot force by stress alone.

Chile Pepper Institute at NMSU is the cultivar and heat-range cite. If a listing prints one number as if it were your fruit, ignore the number and keep the species name. Planting windows sit on Growing hot peppers in Central Florida.

Sources

  1. Chile Pepper Institute, NMSU.
  2. IFAS TR010.
  3. Penn State. Growing Hot Peppers.