Named for the town of Jalapa, Mexico, this is the most popular chile pepper in the United States. Jalapeño produces 3-inch, thick-walled, moderately hot pods with deep green color that matures to a bright red. The skin may show a netting pattern as fruit ages, but it does not affect flavor. Often, the heat of the peppers will vary, even those from the same plant. If peppers grow fast, get plenty of water, and are harvested soon, they may be milder than peppers that stay on the plant a long time, or that develop slowly and under stressful conditions. Widely adapted, jalapeño plants yield a bountiful harvest in dry or humid, hot or cool climates.