In article , Alex Woodward
writes
Perhaps I should give them more time to establish, or do you think there is
a problem with the soil? I have to admit I have not tested the ph level of
the soil - which is an obvious mistake I suppose.

You can get some idea by what grows around. Do neighbours grow
rhododendrons, for example, and what are your commonest weeds?
--
Kay
"Do not insult the crocodile until you have crossed the river"