Hi!

I stuck on a snail level named Dabas / Kintyre and I need some tip (not the full solution). I have 14 leaves, the Leaf flower's price is 5 and the channel's price is 10 leaves. The snail hits the channel on its way, turns back and going to ate my one and only grass. I can stop him with a channel or create to him a longer way by sacrifice a Leaf flower. When the grass grows, I get a leaf from it. Now, I can buy an opposite item to that with which I stopped the snail. And what now...? Or I have messed up the first step?
Please help me! :)