5-6 weeks ago I bought a few rhodos in containers at a local nursery:
Horizon Monarch, Anna Rose Whitney, Percy Wiseman. When I planted
them I noticed that some leaf tips were cut off. I did not think much
of it at the time. :-(

Quite soon I saw that some of the leaves were developing brown spots.
The brown area always progresses from the edge (often the tip) of the
leaf inward. Eventually the all leaf turns brown. More affected by
this disease are the leaves at the base of the plant, and particulalry
the ones directly attached to the woody (older) stems.

At first I kept removing only the leaves that were in the worst shape,
with scarce results. A couple of day ago I decided to remove and
dispose of all the diseased leaves.

Could phytophthora die back be the cause? Considering I live on the
wet coast (Vancouver), do these rhodos stand a chance? Should I apply
a fungicide? I have other established (and healhty) rhodos next to
these new plants, may they be at risk?

TIA,
Luca