Hi !
I have 4 Russian Vines (Fallopia baldschaunica/ Mile-A-Minute plant) that I planted a month or so ago in the ground on the corners of my new (bare) pergola. They have now reached the top (7ft) but the lower leaves are dying off.
It starts with red pigmentation appearing, it then turns "bleached" and the leaf eventually curls up and dies.
We can see no infection by any bugs, even with a magnifying glass.
Can anyone help please?
Thanks.