I'm having tha same problem, started with a paulownia and then a edgworthia, the a hibiscus went. The wisteria stared loosing leaves on whole branches and now overnight big sections of the Indian bean tree have died back. The leaves wilt, then go crispy. How do I check for honey fungus or pytophthora please? Could it be water logging? It's been quite wet and we had the irrigation system on for an hour a day whilst we were on holiday. Help!
Are all of these newly planted trees and shrubs, or established.?
Established trees and shrubs would only really need watering in drought conditions. Watering for an hour every day would mean a lot of surface roots, and the main roots do not grow properly because they have no need to search for water.
Even newly planted , I would give a bucket of water once a week and allow to soak in.
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I'm having tha same problem, started with a paulownia and then a edgworthia, the a hibiscus went. The wisteria stared loosing leaves on whole branches and now overnight big sections of the Indian bean tree have died back. The leaves wilt, then go crispy. How do I check for honey fungus or pytophthora please? Could it be water logging? It's been quite wet and we had the irrigation system on for an hour a day whilst we were on holiday. Help!
Are all of these newly planted trees and shrubs, or established.?
Established trees and shrubs would only really need watering in drought conditions. Watering for an hour every day would mean a lot of surface roots, and the main roots do not grow properly because they have no need to search for water.
Even newly planted , I would give a bucket of water once a week and allow to soak in.
For basics on honey fungus
https://www.rhs.org.uk/advice/profile?PID=180
You are likely to get the fruiting bodies (mushrooms ) in the autumn if that is what it is.