Everybody smiles when they get to be in Jim's garden, even if they're uninvited!
Carol, have you tried the Coral Honeysuckle? It's a hummer favorite here, and doesn't get too crazy out of control, either. It's also drought tolerant, although CA is really taking the drought to an extreme this year, isn't it! Maybe same your 'grey water' in your rain barrel, if it doesn't rain in April? In Utah if there were watering restrictions we took a bucket or a plastic dish pan into the shower to catch the extra, and I'd water the garden with that.