Sweet peas

I'm going to try cordon training these this year. In theory this will give me better quality flowers. I pinched the tops out when they were planted out. Now the resulting side shoots are about 20cm long I've pruned them to leave the best one; this is now trained up the cane, any more side shoots will also be removed to leave a single stem and great flowers on long stems. In theory.

Before pruning:

After pruning: