That’s my first topic on this forum.
I need your help identifying the issue I observe on an old juniper which joined my collection this summer.
Note that most of the branches are concerned.
When I look into a microscope, I can see that the vascular tissue was replaced with brownish balls.
Thank you very much in advance for your support!
And this is a close-up of the tip. We can clearly notice some microscopic white filaments.
Cool… looks like fungal mycelium. Would imply THAT tip is already dead.
Winter antifungal spray… being used?
Your cellphone camera or autofocus camera WILL work efficiently through a microscope eyepiece. Give us a view.
Thanks so much for the response.
I cannot make a photo on microscope since I already removed all concerned tips (around 50 across the tree).
I plan to use fungal treatment in the incoming days and to repot the tree early spring to increase the balance water/oxygen. The source of the issue is surely at root level.
Did you know to ALCOHOL dip your tools to stop the spread? Sweep up any cuttings residue and tips, burn or bag and tag… wash your hands, etc…
It looks like Phomopis, Ryan did a video just recently on this topic and how to treat it.
I have the same thing happening on a few of my junipers too. So far treatment (mancozeb)is working
I didn’t use any tool there. I just pinched the tips with my fingers. I did put the residues in a bag and finally washed my hands (and didn’t touch other trees).
I think this should be OK
Thank you. I looked at this video which gave me valuable information.
Your experience is also very interesting ! I will try to find some mancozeb although I think its use is forbiden in my region (France). I need to check.
Thank you! I Just placed an order