A few people on here were reporting problems with their robinia frisias earlier this year & I wondered how you went on, did they recover? Is it now happening to others too?
I'm absolutely gutted to see my tree has developed some brown spots & curling mainly on it's lower branches & more on the side that gets the east wind. Seems that, according to
this information I've found (in particular see 11th post) it's a problem made caused/worse by this awful weather we've had last yr & this (up to now).
Desolate of Derby
:o(