Yeah I don’t think they do what OP claims. I had bell pepper plants in the garden this year. One green one, which stayed green, and one purple, which do start green but transition to just purple when ripe, but no other colors after that.
They do turn. Not as stated though it Depends on variety. Your green would have changed color with time and ripeness. The purple ones often go red as well with time. Yellow is it’s own variety bred to be that color. Oddly you can get pepper plants that grow all 3 colors (snack size) at the same time. There are also permanent green peppers. And those specifically bred to turn a certain color like yellow or purple. Regardless of type often in larger sample sizes you’ll get those that turn red even when they’re meant to be green or orange or something.
Source: veg farmer including 5 varieties of sweet pepper and 10 varieties of hot pepper.
Yeah I don’t think they do what OP claims. I had bell pepper plants in the garden this year. One green one, which stayed green, and one purple, which do start green but transition to just purple when ripe, but no other colors after that.
They do turn. Not as stated though it Depends on variety. Your green would have changed color with time and ripeness. The purple ones often go red as well with time. Yellow is it’s own variety bred to be that color. Oddly you can get pepper plants that grow all 3 colors (snack size) at the same time. There are also permanent green peppers. And those specifically bred to turn a certain color like yellow or purple. Regardless of type often in larger sample sizes you’ll get those that turn red even when they’re meant to be green or orange or something.
Source: veg farmer including 5 varieties of sweet pepper and 10 varieties of hot pepper.