A woman examines the leaves of a lilac shrub as she prunes it. - VH-studio/Shutterstock What happens when your usually dependable lilac shrub (Syringa spp.) starts developing yellow leaves? Is it time ...

I have a white lilac I planted five years ago but last year I ­noticed the leaves curling up and turning brown. I removed all the leaves and had lots of bloom this summer. The same problem is ...

What happens when your usually dependable lilac shrub (Syringa spp.) starts developing yellow leaves? Is it time to panic? The bad news is that a number of factors might cause yellowing of leaves, ...