Black Spot, Hot, Dry Autumn

[hemmy]

I have black spots showing up on the leaves of several deciduous trees. It looks fungal, but I can’t see any spores on either leaf side with a 10x loupe. The odd part is that it is occurring during a usually dry and warm Oct. We haven’t had measurable rain for over a month. Has anyone experienced a black spot fungus in the Fall?

We had a hard freeze over a week ago, but I brought everything into the garage. I’ve also ruled out any kind of chemical burn. The only thing I’ve sprayed was permethrin to kill mosquitoes under a deck over 2 weeks ago. There could have been overspray but I’ve never had any issue before.

I’ve had small black spots on elms in the Spring, but keeping them healthy and spraying some fungicides seems to remedy it. I also have a landscape Willow tree with black spots in the leaves.

It is occurring on trees in 2 areas of the yard. In one area, it is the worst on Maclura pomifera (which I’ve never had any fungal issue before). It is also on a trident next to the M. pomifera.

I’ll treat with Mancozeb and dispose of the worst impacted leaves. I also don’t water from overhead. But I’m surprised to see it occur during this drought-riden period
I’m
I’m interested to know if anyone has had a similar issue in the Fall?

 

[hemmy]

Also on Oaks, pomegranate, and Osage Orange (M. pomifera) in same first area.

 

[hemmy]

And a Cedar Elm and Osage Orange in another area near the impacted landscape Willow.

 

[hemmy]

The odd part is that it is occurring during a usually dry and warm Oct. We haven’t had measurable rain for over a month. Has anyone experienced a black spot fungus in the Fall?

Typo.

. . . an unusually dry and warm Oct. . . .

 

[pmalelis]

it is defiantly fungal, many maples get a disease black tar spot every fall you have to ensure you rake and dispose of leave in the lawn, but usually that one is limited to mostly maples but this is similar. Usually remedied by collecting the fallen leaves and a fungicide

 

[hemmy]

Dang, now I’m losing leaves and shoots on azaleas and olives. Plus the zelkova has black spots. But the azalea and olives look different in that whole leaves are dying.

 

[jeremy_norbury]

Checks calendar...hmmm, late October...fall or autumn and a deciduous tree with leaves that look like it's fall/autumn.

They're supposed to fall off...and they look shit before they do.