The Q&A Archives: What is it

Question: I have a bush of some sort that came out of nowhere. It has woody stems and it grows to about 5 ft. every season .In the fall it blooms with thousands of light blue small flowers that attract bees.This is the third year Ive had it This spring I transplanted it because it was too close to my neighbor as I didn't want her to get stung. Can you help me?

Answer: This might be a seedling of butterfly bush (Buddleia davidii) or it might be a seedling of blue mist shrub (Caryopteris) or it might be a Vitex. It could also be a Perovskia. These would all be grown as "cut back shrubs" meaning they are cut back short in the spring to remove winter damage and then regrow and bloom on the new growth. But with so many flowers, I wonder if it might be a perennial catmint (Nepeta)-- there are some such as "Six Hills Giant" that can grow that large and they really do seem to have thousands of flowers. I hope this helps.

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