when to prune cedar hedges

(Question)

 

Is it too late to prune cedar hedges about 1/3 from the top?

 

(Answer)

 

The following answer is from Toronto Master Gardeners Guides.

If you do it right away, you should be fine. It’s best to finish pruning about 6 weeks before freeze up and here in Toronto, our first hard frost is around the end of October.

However, there’s always a chance it might be earlier, and there is no harm in leaving the pruning until the spring.

Here is a link to a Toronto Master Gardener Guide on Evergreens Suitable for Hedging, including information about pruning:

https://www.torontomastergardeners.ca/index.php/factsheet/evergreens-suitable-for-hedging-a-toronto-master-gardeners-guide/

and here is a link to Mark Cullen’s Gardenblog entry on pruning cedar hedges:

https://mark-cullen.blogspot.ca/2010/09/cedar-hedges-investment-that-grows.html