Q.DIY Injecting Fungicide Apple Tree
How can I find out how to do Copper Fungal Injections old heirloom Apple Tree? I have a 125 yr. old Heirloom Red Delicious Apple Tree that has acquired a fungal core infection. I’m in Milwaukee, WI, USA and it is constantly raining here and can’t use the Copper as a spray without the waste and dangers of the application. Do you also have US distributors for the syringes? I have no problem drilling/dosing/precautions properly; just want to know if you have used on apple trees. Thanks

Certified GKH Gardening Expert
I suggest you work with a local nursery or county extension service to fix the problem. Here is a link to a series of articles on apple tree problems that may be helpful, plus info on tree injections.
https://www.gardeningknowhow.com/garden-how-to/info/what-is-extension-service.htm
https://forestry.usu.edu/files/utah-forest-facts/getting-chemicals-into-trees-without-spraying.pdf
http://cues.cfans.umn.edu/old/Web/032TreeInjectionsImplants.pdf
https://edis.ifas.ufl.edu/pdffiles/PI/PI27400.pdf
https://www.gardeningknowhow.com/search?q=apple%20tree%20fungal
As to the syringes, we do not make product recommendations. Again, your best source of help would be a nursery or extension expert.