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Una Dunnett's Garlic Wash recipe for Hostas:Crush two bulbs of garlic, then
steam or boil them in two pints of water for three to four minutes until they're blanched. Strain mixture and make back up to two pints. Leave it to cool, then mix one tablespoon into a gallon (3.8l) of water, and sprinkle on to hosta leaves in dry weather. Re-apply after it has rained. Good luck, Kate
The damage certainly looks as if it's being caused by slugs and snails, but I'm wondering if it could possibly be something else.
I've smeared vaseline round the rim of the pot, to about 3 or 4 cms below it.
Below this I've got a 5 cm band of copper, with outward-facing anti-snail spikes.
The pot is standing on a bed of gravel, providing a 5 cm strip round the base of the pot. (I can confirm that the gravel has no deterrent effect that I can see. In fact my snails and slugs seem to quite like it).
I scattered 2 types of slug pellets (metaldehyde and iron phosphate based) as per the manufacturers instruction, in the gravel, and also actually inside the pot, on the earth.
That's a grand total of 7 different barriers the little chappies have to get through. I know this is going to stop them. You know it's going to stop them. So why is it that the slugs and snails in my garden now seem to know it? Haven't they read all the advice about protecting hostas on the internet?
Anyone got any ideas what could be devouring the hosta if it's not slugs or snails? Or is my garden infested with a new mutant breed of ex-SAS, super-intelligent, wily slugs and snails?