Could You Please Let Me Know What Is Wrong With My Japanese Boxwood?

Question

My sprinkle system is working and I do not think it is a watering issue. I appreciate any help on this .

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Answer 1

I do see what appears to be a darker soil near those two. It may be that the spot is slightly lower and holding on to water for longer. Soil that is not allowed to dry out will deprive roots of oxygen, while allowing for unwanted microbial life.

I would try and keep water from that area, or water the whole area less, as they can handle a slightly drier soil more than wet, though they prefer the area, only, slightly moist. Anywhere from 3 to 5 inches down should be dry before watering again.

For now, I would water with a fungicide, and follow the above. If you do not see new growth soon after doing so, then you might consider them to be replaced.

This article will help you with proper care:

https://www.gardeningknowhow.com/ornamental/shrubs/holly/japanese-holly-care.htm