What does it mean when a jalapeno turns red?
Also know, is a jalapeno still good if it turns red?
Jalapenos are ready to be picked when they are firm and bright green, but you can leave them on the plant all the way until they turn red. Red jalapeno peppers are sweeter to the taste and not quite as hot, though they absolutely retain their jalapeno heat and flavor.
Likewise, what does it mean when a jalapeno turns black?
Black rot is likely to affect your jalapeno peppers if you leave them on the plant to ripen until they turn red. It usually occurs if there is too much moisture from rain or excessive watering around your ripening jalapeno plants.
So yes, chilis get hotter as they ripen (that is, as they turn from green to red). Many chili varieties are picked and sold in stores while still unripe and green (e.g. jalapeño, serrano, poblano), but you will occasionally see ripe, red ones in stores.