Otherwise, rhododendrons require very little pruning unless branches are dead or injured. If you have older shrubs that have ...

The leaves of the rhododendron bush often will curl up as a response to freezing temperatures. This is natural, and the plant usually will unfurl its foliage once temperatures rise again.

2024 • A phenomenon called "thermonasty" causes rhododendron leaves to curl up when it's really cold, allowing this broad-leaved evergreen to thrive in damp soil and freezing temperatures.