Leyland Cypress triming

Question

I cut about 12 inches off from the top of two cypress that were three years old. It was early summer last year. The main stem has not grown any taller since on one and the other one a branch took over going vertical. Will these cypress continue to grow in height again or did I make a big mistake?

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Answer 1

I don't recommend trimming them, as it destroys their shape. They will never return to the original shape, but the other branches will take over and become new tops. Now there will be multiple.