I have 2 of the Clematis types where they grow in one year and you cut them back to the ground in the winter. Every spring I say I'm going to sort them out before they start to grow and get all tangled and every year I fail :) I have managed to sort of separate them this year but how do I train them so that they look nice? It seems to have about 6 stems - I don't tie them all to one cane, do I? Otherwise the flowers will be too crowded together, I'd have thought. Will they look silly with several bamboo canes supporting each individual stem? Or do I need to buy a trellis?