Janet Baraclough wrote:
Good luck! I find investing in the copper metal rings rather than the
tape is good value really. They get a lovely greyish colour eventually
and kinda blend in the garden. Cutting a few low branches of your
phormium would minimise climbing slugs.

Phormiums aren't shrubs and don't have branches. It's a clump of
leaves, each one growing from ground level and each can reach a couple
of metres long.. Down in the middle of the jungle is where snails love
to hide out You'd need a couple of metres of copper tape to surround the
base of a large phormium clump.

Well yes ...! Silly I agree. It's hard to find branches on a monocot
plant ;o) I wrote phormium thinking of my copper rings and what I do to
minimise the slugs reaching the plant using branches and leaves as
little bridges. Indeed it wouldn't work on them. My friend has an
enormous one and is plague by mice apparently. They chew the leaves
like if they were celery sticks ... Would you think that's a
possibility?