Holley Bush was mowed over at base?

Question

My son mowed over one of my holly bushes, leaving about three 6″ roots. I trimmed them close to the ground but only one root is bearing leaves?

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Answer 1

They are tolerant of being cut back severely. In fact, a mature holly can generally be cut to the ground and will regrow vigorously from its roots.
Give the Holly time to recover!

https://www.gardeningknowhow.com/ornamental/shrubs/holly/growing-holly-bushes.htm