when to cut back - Knowledgebase Question

barnegat, Ne
Question by tricklecourt
August 28, 2008
thank you for your answer but you left out spirea. when do we cut it back and by how much? is 10-10-10 also good to feed?

Answer from NGA
August 28, 2008


All spirea japonica greatly benefit from hard pruning in early spring. Well established shrubs can and probably should be pruned to 6-8", younger ones should be left at 10-15" at least for a couple of years.

Prompt pruning/shearing of about 1/2 to 1/3 of the height right after initial bloom will result in rebloom within 45-60 days.

It's too late in the season to do much pruning now so hold off until spring. A 10-10-10 is a good general purpose garden fertilizer. Apply in the spring.

Best wishes with your landscape!

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