Pruning Plants
Q.

cutting back ironweed

Zone Upstate New York , so 5 | Julied13 added on October 26, 2015 | Answered

Do I cut back Ironweed plants in the fall? I have a couple varieties. They seem to stay green. Also, do I have to wait till spring to prune back knockout roses?

A.
A.Answers to this queston: Add Answer
Downtoearthdigs
Certified GKH Gardening Expert
Answered on October 27, 2015

Ironweed can be pruned back in the spring or early summer to control the size of your plant.
Allow the plant to die back naturally through the late autumn, then you can clean up the leaves now if weather allows or wait until spring.

https://www.gardeningknowhow.com/ornamental/flowers/ironweed/vernonia-ironweed-flowers.htm

Knock Out Roses also should be pruned in spring.

https://www.gardeningknowhow.com/ornamental/flowers/knockout-roses/prune-knockout-roses.htm

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