Prunus cistena dying

I have 3 prunus cistena shrubs. They are all turning brown (leaves) and shrivelling up and falling off. Please see attached photo. Can you help?…

Newport Plum tree

I have a 12 year old Newport Plum tree that has been struggling for the past two years. Last year there was definitely less new shoots growing and this year very few. I noticed there is a black fungus growing…

Prunus ‘Kanzan’*

1. Can I plant a prunus Kwanzan tree by a Roberson ? 2. Can a prunus Kwanzan be planted by rejoinder bush…