please instruct on proper pruning of boxwood spheres

Question

My 4 foot rounded box woods were just pruned into balls with lower branches trimmed inward.. I thought this would kill the plant, and it just need to slant ever so slightly inward.. help!

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Answer 1

It's best not to turn inward at all. By leaving the top rounded and the sides in a gumdrop shape, it allows sun to reach all the leaves. If you must curve inward, just a slight indentation will help avoid the thinning and browning of the lower shrub. Also some thinning cuts, instead of just shearing, will allow more light inward.

https://extension.umd.edu/hgic/topics/pruning-shrubs-and-hedges

https://www.gardeningknowhow.com/ornamental/shrubs/boxwood/trimming-boxwood-bushes.htm