Answer: Lack of bloom indicates it is time to dig and divide your calla lily. You can wait until spring, just as new growth is beginning. Your clematis will bloom more if you prune it back - it blooms on new growth of the season and pruning encourages new growth so the more new growth, the more flowers you should see. I think your grouping of plants sounds stunning! Things do tend to get overcrowded over the years, though so you may have to take a hard look and everything and determine whether or not there's too much competition for light, moisture and nutrients. You won't necessarily have to remove plants or dig and transplant, but they may all benefit from some spring pruning. If they still appear over crowded or they are not blooming as profusely as you think they should, you may want to dig and divide the plants this time next year. Good luck with your lovely garden!
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