In article , Flower Bobdew
writes

Speaking of evergreen Hebes... Anyone else had significant problems this
year with black spot and defoliation? I've mostly used Hebes in pots, so
far, to pleasing effect - but this year most of them look desperate.

Apparently they're not keen on being watered from above, but when hand
watering I've kept this to an absolute minimum. My local garden centre
suggests it might be down to our mild but wet winters, and they're
planning to not stock them after spring/early summer next year, as
clearly no one is going to buy anything that looks like...well, what I
have out there now, sadly.

No trouble at all. They're all looking pretty good. But they're all in
the ground, not in pots, and I don't water them.
--
Kay
"Do not insult the crocodile until you have crossed the river"