Why Have A Number Of Plants /shrubs In My Garden Died This Winter ? It Was A Mild Winter. Was It The Amount Of Rainfall ?

Question

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Answer 1

It is very difficult to say with limited information.

Excessive rainfall can cause root rot, and suffocation depending on exact species. Some are more tolerant than others.

It is very possible that the rainfall has killed off your plants, though. If this is normal for your area, then you may consider plants that tolerate wet soils.

This article will help:

https://www.gardeningknowhow.com/ornamental/water-plants/wgen/water-tolerant-plants.htm