J. Quince needed help - fungal?

[Clicio]

Hi fellows.
One of my quinces is losing its leaves, they get yellow with brown spots from night to day. As the others are ok and humidity is low overall, I guess it is a fungal issue.
Should I try Daconil? Neem oil?

 

[Vance Wood]

When do you repot your Quince?

 

[thumblessprimate1]

Let's see the whole tree.

 

[bonhe]

Did you water it when it had no more sunlight?
Thụ Thoại

 

[Clicio]

When do you repot your Quince?

Usually in the fall. In fact, I was going to repot it next month, as I am located in the Southern hemisphere.

 

[Leo in N E Illinois]

You are coming into your autumn, it is pretty normal for flowering quince to drop a lot of leaves in autumn. Where I live, with severe winters, they become totally leafless. I think this is all that you are seeing. Japanese flowering quince are not noted for fine autumn colors, leaves can look awful before dropping.

If you think the black spotting is fungal, flowering quince are pretty much susceptible to all the diseases that a rose bush might get, including black leaf spot, fusarium, and downy and powdery mildew. Stop at your local nursery and see what products they have labelled as Rose Spray. or Rose Dust. The fungicides in these sprays will work well on your flowering quince, and on any apple or crab apple in your collection.

 

[Clicio]

Did you water it when it had no more sunlight?
Thụ Thoại

Usually they get watered in the morning. I try not to water in the evenings, unless it rains of course.

 

[Clicio]

You are coming into your autumn, it is pretty normal for flowering quince to drop a lot of leaves in autumn.

Yes, it happens here. But I've got two other quince that are fine. Losing a few leaves, but not yellowing like this one.

...including black leaf spot, fusarium, and downy and powdery mildew. Stop at your local nursery and see what products they have labelled as Rose Spray. or Rose Dust.

Thanks for the tips, I will search for them.
Very helpful!

 

[thumblessprimate1]

You are coming into your autumn, it is pretty normal for flowering quince to drop a lot of leaves in autumn. Where I live, with severe winters, they become totally leafless. I think this is all that you are seeing. Japanese flowering quince are not noted for fine autumn colors, leaves can look awful before dropping.

If you think the black spotting is fungal, flowering quince are pretty much susceptible to all the diseases that a rose bush might get, including black leaf spot, fusarium, and downy and powdery mildew. Stop at your local nursery and see what products they have labelled as Rose Spray. or Rose Dust. The fungicides in these sprays will work well on your flowering quince, and on any apple or crab apple in your collection.

Yup. Looked normal to me. What's in the picture does not have me worried.

 

[Clicio]

Let's see the whole tree.

Well, brought it close to a plain wall to take the picture.
But... I have already cleared off the yellow leaves this morning. Every morning I've been getting more and more yellow fallen leaves.

 

[Clicio]

Yup. Looked normal to me. What's in the picture does not have me worried.

Thanks.
So I will wait a little longer before doing anything drastic about it.
I appreciate all the information given, thanks a lot!

 

[bonhe]

Usually they get watered in the morning. I try not to water in the evenings, unless it rains of course.

Very good. Thanks.
My Chojubai had same sign as your quince in the fall and it is healthy . My other quince did not have this sign. So, you should not worry. ?
Thụ Thoiaj

 

[Clicio]

My Chojubai had same sign as your quince in the fall and it is healthy . My other quince did not have this sign. So, you should not worry. ?
Thụ Thoiaj

Thų, very helpful, thank you.
I am not going to worry too much, hopefully.

 

[Paulpash]

It looks like an old leaf it's decided it's time to shed.

 

[bonhe]

Thų, very helpful, thank you.
I am not going to worry too much, hopefully.

You ảre very welcome
Thụ Thoại

 

[Vance Wood]

Usually in the fall. In fact, I was going to repot it next month, as I am located in the Southern hemisphere.

It is my understanding that this is the optimal time to repot them, if you do them in spring you can cause a nematode reaction. What ever is going on it appears to be a lot like the fungal infection common in members of the Rose family. It looks like black spot.

 

[shinmai]

Any further changes since Sunday?

 

[Clicio]

Any further changes since Sunday?

Leaves are not dropping any longer. But...there are a few left.
Besides waiting, I have sprayed it with black spot fungicide.
Thanks for asking.