i planted a yellow a pink and a white angel trumpet last year this year when they came back and bloomed they are all pink why?

Question

all my angel trumpet plants are pink this year. last year there were yellow pink and a white

Answer 1

Brugmansia or angel's trumpet blooms also change color and size in response to sun, shade, temperature, soil pH and stress. Cooler temperatures deepen flower color among some; others pale with cooler weather. These changes may occur on the same plant or the same variety planted in different locations.