What Would Cause A Weeping Birch To Have Yellow Leaves

Question

we had a very dry winter and very strange went from very cold to very hot and back again and had a late hard freeze just before they leafed out should any of the roots show . covered them with mulch recently.. also tree is nearly 30 years old.

Answer 1

Sounds like it is stressed from the drastic changes in weather. Keep it watered regularly till it recoups. Also, birch trees in the backyard may only live 20 years so you have a toughie!

https://www.gardeningknowhow.com/ornamental/trees/birch/how-long-do-birch-trees-live.htm