That wouldn't work.I'm with pansy. Dig it out and plant it fresh if it was something you liked. If you weren't to bothered about it, empty the whole thing out,add new compost and plant something else. You'll probably find snails lurking round the back of under the rim. Drop them on the ground and step on them.
I would do the same as Pansyface suggests, and get it out of the pot. It could be vine weevil (bit paranoid about those at the moment), but whatever it is, fresh compost may help. Also telling it to buck up may help as well......
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Last year, I thought it was snails, so I've put Rose cuttings around it, as a deterent.
You'll probably find snails lurking round the back of under the rim. Drop them on the ground and step on them.