I have 3 azalea plants why does 2 of them have green leavez and 1 has purpleish colored leaves now that is heading into winter. Whats the difference?
Assuming they are all the same variety, the difference is due to the different amounts of sun they got during the growing season. If they are different varieties then that would be the reason. Be aware that some azaleas will even lose some or even all their leave over winter.