What kind of weed killers have been used in the area recently?

Beyond that, the tree will grow out of the damage on its own time schedule.

Thanks All for your answers!

@Jean001: My persimmon is on the upper level of my yard, so week killer cannot touch it. I go green in the last six month which mean I use no weed killer. I pull the weed by hand, and use grass fertilizer only.

@Don Yellman: Should I cut the infected leaves? It seems the curve leaves were the one grow in the early season, the later leaves look normal for now.

Have a great Sunday!
Alpharetta.

Alpharetta:

If the new leaves are coming in normally, that means the infestation has already run its course. There is nothing to be achieved by removing the curled leaves now. Next year's infestation, if there is one, will come from psylla flies laying eggs on the tree later in the season.

That egg-laying/spring hatching cycle can be broken by the use of dormant oil sprays.

Don Yellman, Great Falls, VA

You said: "My persimmon is on the upper level of my yard, so week killer cannot touch it. I go green in the last six month which mean I use no weed killer. I pull the weed by hand, and use grass fertilizer only."

That doesn't rule out weed killer damage.

The reason: Vapors move on the breeze. It could have come from several doors away.

That said, Don knows more about tree fruits in his half of the US than I do.

Beyond that, even though psylla-affected foliage returns to normal after a while, so does herbicide-affected foliage. So look very carefully to determine what the problem was.

Here's some info about persimmon psylla from Univ Florida
http://entnem.ufl.edu/creatures/fruit/persimmon_psylla.htm

That same info is in this pdf which you can print.
edis.ifas.ufl.edu/pdffiles/IN/IN70000.pdf

Oh yes. Congratulations on going green.

Here is a link that might be useful: persimmon psylla from Univ Florida

This is almost certainly psylla damage. What I do is spray each left while holding it and unrolling it with my fingers. Obviously its a time-consuming process. I need to get out and spray some oil right now before the leaves start curling -- if you get it early it is not hard to fight back.

Scott

I have rampant persimmon psylla due to hundreds of wild trees around my property. It strikes my kaki persimmons every year. I have never done anything about it, and they seem perfectly fine, with just some cosmetic damage in spring.

While persimmon psylla commonly cause curvature of the leaves, these insects and their larvae are so easily seen that since you say you've seen no insects, it makes me suspect a different cause for the problem. In addition the curvature of the leaves in the photos is very symmetric and strikes the oldest leaves - a picture I would not expect from psylla damage this time of year. More likely, this damage was caused by an early season frost which permanently distorted the earliest leaves; the later leaves not affected by the frost develop normally. If this is the case, nothing need be done.

Creekweb, at the level of infection his leaves are at there is nothing to see -- the psyllae are small. Even when the infection is greater it doesn't look like bugs. I thought the white stuff in the leaf edges was mildew, not bugs, and it was not until a year later that I figured out what it was.

On that topic, on the most severely curled leaves (curled beyond any of the ones I see in your picture) when you uncurl them there will be this dry white powder stuff - if you see that you can up the odds that it is psylla to 100%.

Scott

I noticed the psylla infection on my persimmon trees. Are you guys saying there's no way to get rid of them at this point? should I just wait to spray dormant spray?

I am having a similar problem on my Jiro persimmon. I can't see the pictures posted but the description is very much the same. I can not find any "white stuff" in the leaves and havn't used any spray (except soap on garden plants) in the back yard this year. We did have a frost after everything was leafing out this year and I had thought that was the problem but new leaves are showing the same brown tips. Help please.

I have the same infection on my Asian persimmon trees (mostly on young succulent branches/leaves ) in Silver Spring, MD. I'll try to use dormant oil next winter/spring, but for now - what kind of spray would you recommend?

Most of my trees are young enough, so I can uncurl and spray each individual leaf.

Psylla damage seems to be particularly bad this year, and while it usually stops by August, it is ongoing. My new hybrid grafts that I hadn't sprayed have been severely affected. I use either triazicide or permethrin with good efficacy. With the August growth spurt you may need to reapply to keep up with the new leaves.

I should add that a more efficient strategy to address this problem is to use imidacloprid prophylactically with susceptible plants with application as new leaves emerge in the spring. This obviates the need for frequent reapplication of insecticide to maintain protection of newly emerging leaves.