Unhealthy lilacs – need some advice via /r/gardening


Unhealthy lilacs – need some advice

Hi all,
My parents have a lilac bush that has developed some problem or other, evident on the leaves:
http://ift.tt/1LlEKZT
http://ift.tt/1VEztaW
They are wondering what causes this and how to prevent it next year. Would really appreciate any insight. Thanks!

Submitted October 08, 2015 at 04:07AM by AMSNick
via reddit http://ift.tt/1jODjgs