A common problem with strawberry trees is spot anthracnose and black spot, but it isn’t the only one.
Symptoms are the presence of brown spots with a red or purple perimeter on leaves.
There are several strands of this disease, but all can be treated in the same manner.
This fungus will spread until all leaves are contaminated and drop off.
The most effective way to protect the tree is to give it an excellent growing environment.
Rich and very well-draining soil.At the end of winter, spray Bordeaux mixture 2 to 3 times, at a two-week interval.
As soon as the fungus appears, collect fallen leaves, burn them or dispose of them in a place that won’t risk contaminating your plants.
There isn’t any natural product to use that can definitely eliminate this particular type of fungus, but you can reduce its spread with Bordeaux mix. Best of course is to remove any infected parts beforehand.
Using bordeaux mix and even fungus-killing fermented weed teas is better than to spray with mancozeb or myclobutanil based solutions, which are fungicides sold in horticulture stores.
These three fungus spread most when the weather is warm.
1 – Spots are round, purple and spread on both leaves and twigs
You’
re dealing with the more severe of these fungus, Elsinoë mattiroloanum.
It’s quite aggressive and must be taken care of quickly.
2 – Brown and purple spots, oblong shape
This is an infection by Ruptoseptoria unedonis.
It’s part of the family of septoria leaf spot fungi.
3 – Brown spots with reddish edges, roundish shape
This is a variant that is most common in British Columbia, in Canada.
Its name is Didymosporium arbuticola Zeller.
Other diseases and treatments related to leaf spot:
