The Q&A Archives: Magic Carpet Spirea

Question: I live in zone 6 and want to know if it is too late to shear back some of the shrub? I have honestly never sheared it. It's doing great but getting a bit big now for the spot. Will I decrease the blooms too much for this season?

Thank You.

Answer: If it has already leafed out, it is a bit late to shear it as you risk removing the main bloom display. If it has not leafed out yet, go ahead and cut it back by a half to two thirds. Or, you could shear lightly right after it blooms. Typically you would cut this shrub back by about half in very early spring before it starts to grow. This encourages vigorous new growth and better blooming. Then after bloom, you would trim it lightly (shear) to remove the faded flowers and tidy it up. I hope this helps.

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