Beginner Gardening: what is eating my new clematis montana?, 2 by narmaj

narmaj wrote:
Something is eating all the leaves starting from the top! Which makes me think it is not slug or snail. What could it be and any tips on how to save my very young clematis?
I have it climbing strings to lead it to dead branches and a tree that I want it to climb. One photo is two weeks ago. The totally leafless stem is from now (after two weeks absence and having put Escargo and coffee grounds around the base, in case it were snails. The pictures need to be turned 1/4 clockwise - it doesn\'t work for me.