Hi -planted an ornamental cherry tree w Red/purple leaves last summer. This year the tree Leaved out early, is doing well and shows growth but the leaves are green! Why are the leaves not Red/purple? That’s was why I bought the tree.
for a variety of plants, red color is a function of sunlight. that same plant grown in the shade or in enough shade the leaves will remain green. Local conditions can vary so suggest you contact your local Extension office for a focused reply to your locale.