In message .com,
Simon writes

What about some type of grease? That's more the thing I was thinking
of!!! But dog poo is an inventive solution!

Don't grease the leaves, they need to be able to breathe.
Grease on the stems is OK.

You could dead-hedge between/around your plants while they grow, maybe
with pea sticks and grow sweet peas or canary creeper up them the first
year.

--
Sue ]