Carpinus Leaf Damage.... Disease? Bugs?

[just.wing.it]

My Korean Hornbeam has a bunch of leaves like this....
Ever seen this?
Any ideas?
I don't see any bugs, but I'll have to take a closer look next chance I get.

 

[jeremy_norbury]

Beetles - some of mine have it too.

 

[just.wing.it]

Beetles - some of mine have it too.

Thanks Jerry. I'll keep my eyes peeled.

 

[fh05]

Japanese beetles ??

 

[just.wing.it]

Japanese beetles ??

I'm thinking yes...
It's been a while since I sprayed this one, it has grown a lot since, and the damage is on the new leaves ...
Just sprayed it down, along with a few others.
Used ortho 3 in 1, safe for veggies and fruits up to a week before harvest....it's been good so far.
But I've got every bug known to man over here...

 

[jeremy_norbury]

Potentially caterpillars too.

 

[Victorim]

Yeah, critters bud.

 

[Rambles]

Around here, beetle damage looks more delicate than caterpiller damage, so if this were my neck of the woods, i'd be betting beetle.

 

[just.wing.it]

Around here, beetle damage looks more delicate than caterpiller damage, so if this were my neck of the woods, i'd be betting beetle.

I would think beetle too, I see all kinds of beetles daily here.
Rarely see caterpillars.

 

[miker]

My Korean Hornbeam has a bunch of leaves like this....
Ever seen this?
Any ideas?
I don't see any bugs, but I'll have to take a closer look next chance I get.
View attachment 148731

I have seen this type of damage before on KH I was growing. My current KH actually has some signs of pest damage and possibly another disease affecting the leaves. As before, I hit it with a systemic combination pesticide/fungicide to cover as many possible issues as possible and it is looking somewhat better since I treated it a couple weeks ago. The new growth looks unaffacted.

One has to be careful using systemics on certain tree species, but I believe Korean hornbeams are not one of these species.

As a side note, when I live in Fairfax Co. VA in the early 2000s, Japanese beetles were a huge problem for a period of time every summer. Living three hours north of there now, I have not yet seen a single Japanese beetle or heard of them being a problem here. Maybe a little later in the summer?

 

[JudyB]

Japanese beetles are later in the season, at least here. KH are fine with systemics as far as I know, I've been using granular yearly on mine with no issues.

 

[LanceMac10]

Ton of birds here on the ranch....always wondered if the birds were picking at them in early spring. Buds swelling/opening look pretty juicy.......



Like they were making snowman with a folded up piece of paper.....heheheeeee......


Get these on mine...ol' Ann Margeret....no visible signs of infestation/fungus.....I don't spray it or anything. Did see a big green caterpillar on one of my maples.....looked like an alien Gummi Bear on steroids...


If you do spray, do it in a shaded/safe for the weeones area..... You have until next spring to practice looking for bugs!!



Wouldn't worry too much.....just keep a wary eye and all that.....

 

[just.wing.it]

Ton of birds here on the ranch....always wondered if the birds were picking at them in early spring. Buds swelling/opening look pretty juicy.......



Like they were making snowman with a folded up piece of paper.....heheheeeee......


Get these on mine...ol' Ann Margeret....no visible signs of infestation/fungus.....I don't spray it or anything. Did see a big green caterpillar on one of my maples.....looked like an alien Gummi Bear on steroids...


If you do spray, do it in a shaded/safe for the weeones area..... You have until next spring to practice looking for bugs!!



Wouldn't worry too much.....just keep a wary eye and all that.....

Indeed!
Just came back from a weekend trip and found my aphids back on my crape myrtle...
It's definitely THAT time of year...

 

[cbroad]

Was thinking beetles too, but I wonder if it was Japanese beetles, wouldn't there be a lot more damage than that? I see them devestate whole leaves and plants.

A lady I used to work with always said soft bodied insects eat from the outside in of a leaf, and hard bodied insects eat from the inside of the leaf. Don't know how true that is, but it sounded good.

I should probably check mine too

 

[just.wing.it]

Was thinking beetles too, but I wonder if it was Japanese beetles, wouldn't there be a lot more damage than that? I see them devestate whole leaves and plants.

A lady I used to work with always said soft bodied insects eat from the outside in of a leaf, and hard bodied insects eat from the inside of the leaf. Don't know how true that is, but it sounded good.

I should probably check mine too

I need to research it, to find out what it is, but I've seen these tiny little bugs that jump lightning fast. Don't know what they are. I thought it may have been a predator at first, but maybe the culprit.

 

[Bonsai Nut]

Just came back from a weekend trip and found my aphids back on my crape myrtle...

Check for ants. Often if you have aphids that keep "returning" they are being placed there by ants.

 

[0soyoung]

Got slugs/snails around?

 

[just.wing.it]

Got slugs/snails around?

I see them occasionally, but not all over....
What is the significance?

 

[0soyoung]

I see them occasionally, but not all over....
What is the significance?

They munch leaves in a fashion similar to that shown in your pic.

 

[Bonsai Nut]

They munch leaves in a fashion similar to that shown in your pic.

Also... they only come out at night. Lift up your pot and check the bottom and see if you find any slugs.