Amur maple problem

Steven1969s · Jun 10, 2020

Hello everyone.

I keep pulling leaves with this off of my Amur maple. Is this a fungus??
It started out after a late spring frost and I thought I had it contained. No it's hot and I see some more leaves with this.
The tree gets half sun half shade. It's in a green house with plenty of air flow. Leaves don't get wet.
Thanks

sorce · Jun 10, 2020

I don't think any amount of airflow has the power to negate the greenhouse effect, at least not in the sun I escaped from yesterday. Brutal.

Sorce

Forsoothe! · Jun 10, 2020

The Amur river runs between Siberia and Outer Mongolia and you're keeping the tree in a greenhouse?

M. Frary · Jun 10, 2020

Put it outside.
I keep mine in full sun also.
It probably is getting a little scorched in the greenhouse.

rockm · Jun 10, 2020

Steven1969s said:
Hello everyone.

I keep pulling leaves with this off of my Amur maple. Is this a fungus??
It started out after a late spring frost and I thought I had it contained. No it's hot and I see some more leaves with this.
The tree gets half sun half shade. It's in a green house with plenty of air flow. Leaves don't get wet.
Thanks

Doesn't need to be in a greenhouse. That looks like it's being kept too wet and the humidity in the greenhouse is likely causing it. Get it outside and watch the watering

sorce · Jun 10, 2020

Forsoothe! said:

Scoot not Shoot!

Sorce

M. Frary · Jun 10, 2020

It don't need a greenhouse in the winter,let alone during any other season.
These trees can withstand the most brutal I get here with minimal protection.
Just some mulch.

Steven1969s · Jun 10, 2020

Forsoothe! said:
The Amur river runs between Siberia and Outer Mongolia and you're keeping the tree in a greenhouse?

I keep all my trees in a green house with ventilation. I've kept them like this for years. When it gets too hot in the summer I just through a 40% shade cloth over it.
The reason that I use a green house is because I keep many Japanese maples and here in Nj we have late spring frost and if you're familiar with Japanese maples you'll know that frost will kill new growth and I have lost a few trees because of this.
The greenhouse is my guarantee that there won't be any die back or dead trees and my trees all seem very happy.

Amur maple problem

Steven1969s

Mame

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sorce

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Forsoothe!

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M. Frary

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rockm

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