Why Have The Leaves In My Pieris Blackened?

Question

A long established Pieris in a south facing garden

Answer 1

Unfortunately, your photos did not come through. I am unable to assess the situation.

I'm wondering about it being in a South facing position. They do not tolerate full sun. They are meant for partial shade to full shade. It could be that the shrub is getting too much sun, and has become weak over time. This can leave it open to infections.

If you can provide more shade, then this can help.

If the plant is in sufficient shade, already, then a soil infection could be likely.

This article will give you more information on the care of the shrub:

https://www.gardeningknowhow.com/ornamental/shrubs/japanese-andromeda/grow-japanese-andromeda.htm