After flowering, deadhead where practical, to promote vegetative growth rather than seed production. Remove dead flowers from rhododendrons carefully; next year’s buds are just under the old heads and will start to develop shortly after flowering. Azaleas and rhododendrons may be transplanted at a...
Trimming should be doneimmediately after flowering stops in summer, but no later than August 1. Do not prune in fall, winter, or spring or you could be cutting off new buds. Tip-pruning the branches as leaves emerge in spring can encourage multiple, smaller flower heads rather than fewer l...
Deadhead rhododendrons right after they finish blooming and be careful not to cut off next year’s buds, as they bloom on old wood. Shape into a rhododendron tree to show off the sculptural trunk, or to give an arched or cascading effect. Fertilizing: Proper soil preparation before planting...
Deadhead Large Leaved Rhododendrons For the leather-leaved, large-flowered Rhododendrons (like R. catawbiense), removing the flowers after the plant has bloomed will encourage it to spend its energy creating new buds for next year instead of growing seeds. To do this, you can use pruning she...
After flowering, deadhead where practical, to promote vegetative growth rather than seed production. Remove dead flowers from rhododendrons carefully; next year’s buds are just under the old heads and will start to develop shortly after flowering. ...