I have a single Lapin cherry tree in my southeast Portland yard. Last year it became infected with what I believe is blossom end rot, beautiful fruit up until just before final ripening. I have tried aggressive hygiene on the tree and ground, but the rot has returned again this year. I believe the infection comes from the Kwanzan Cherry Trees which decorate the parking strips of my street. Is there any hope of getting back my healthy tree and fruit without having to take care of the whole street's Kwanzans too?
Peter
Kwanzans they are so susceptible to serious diseases that they have a relatively short life, I believe that they are the source of all misery.
Cherry (Buds) are very sensitve to Bacterial canker. Especially during cold and humid weather there is an outbreak.
There is hope:
preventive spray during the fall, a second spray in early spring with a cupper solution, you don't have to spray the Kwazans, only yu'r Lapin.
I'm afraid for this season cupper "rescue spray" is to late.
I too have a Lapins cherry tree which seemed to develop brown rot last year on all the fruit late during ripening. This year I gave up on organic and have been spraying it with myclobutanil (Immunox Fungicide). I have not yet seen any signs of brown rot but it is probably too early to tell and all the fruit is still pretty green.
Also, this year the bloom was even less than last year, even though the tree otherwise seems to be thriving. This maybe because it is just in its third year after planting.
I doubt our trees are suffering form bacterial canker since the branches and leaves look perfectly healthy.
Peter, is all the fruit on your tree turning brown and dry?
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