Can you post some leaf burn photos?

[remist17]

I am having some issues this year with leaves on several trees. I never had this issue before. The tips of the leaves seem to be brown and crunchy. It started with my hornbeam and now some maples. I moved them to shade. I was hoping someone could post some sun burn leaves or fertilizer burn leaves.

I would like to compare to my leaves.

Thanks

 

[cmeg1]

I personally have found that Coreana Hornbeams get some brown edge curl to the leaves when the roots may have taken a hit in one form or another.The harder the hit the more brown leaves.They seem to overcome it if it was not too bad.

 

[cmeg1]

If you have mainly new growth tips shriveling,maybe the top is growing more than the roots are.

 

[remist17]

One hornbeam is really bad. The leaves are all turning brownish green and many are getting the brown ends. I see some bud swell so I think it will be ok. It might be burn from fertilizer. I used some 10-10-10 and I think I didn't get it spread out right. I moved all the maples, hornbeam's and elms out of the hot sun. Resently it had been pretty intense sun. I think a combo of sun and feet did these in. I hope they mack it.

Prior to this years bud break I depot all the trees in larger pots. I really don't think the roots were the issue.

 

[coh]

Maybe you can post some photos of your trees?

Here are some "burned" leaves on a winterhazel, from last summer. When I acquired the tree the leaves looked great. Within a couple of weeks, many developed brown/dried edges and tips. I'm still not sure what I did to it, but it has developed similar symptoms this year. It's a weaker plant, a cheap reclamation project with a damaged root system (that happened before I got it). It very well may end up in the ground next spring.

Chris

 

[MrFancyPlants]

Here is a but of fertilizer burn on the older leaves. It was kind of funny, but I brought this guy to the nova bonsai meeting to discuss the impending graft, and during the meeting it started shedding leaves. The leaves had a weird translucent thing going on that was probably ruptured cell walls. Let it be a lesson not to mix beer and fertilizer. Well maybe you could mix some beer in since I hear has some nitrogen content, but certainly don't drink a bunch of whiskey and then drink a bunch of fertilizer. I think you know what I am getting at. I had big plans for work to do on this tree this growing season and now am a but unsure of how to proceed. It has bounced back from it's unintentional defoliation quickly, but I don't feel confident performing the graft on it quite yet. I was thinking about putting it in a flat for a month or two to gather strength so that I could still get it done this season.

 

[Gene Deci]

Last year I lost some maples to a blight. It started out with brown and black leaf edges and I thought it might be "burn" of some sort at first. When it got worse T took a couple to my county extension agent and he told me it was a blight and it had progressed enough that there was really no help for it. He was right. It might not hurt to get your trees checked.

 

[remist17]

Ill get some photos and post them up. Is there anything to stop blight?

 

[remist17]

The top photo is the hornbeam.
The second and third are the elms

I can say the elms look like sun burn. The hornbeam I have no idea what it is . One day it was green then the leaves had the elm leaf crunchy then all the leaves are like this and the color is terrible. I am not sure if this one is a goner or not. There are little buds forming but I don't know what it is.

 

[coh]

The elm looks similar to my winterhazel, but milder. The hornbeam...looks scary. When was it last repotted? Is it in a nursery container with nursery soil, or a bonsai pot with bonsai soil? I'd seriously consider pulling it out of the pot and checking the condition of the roots. Any evidence of mites or other insects?

Chris

 

[cmeg1]

Is it tap water with chlorine in it.If so it is recommended to have a couple open containers to always have some airing out for a few days.

 

[remist17]

I have had this for two years. It is in a 10 inch bulb pot with bonsai soil. I look it out of the pot and looked at the roots. They looked ok. No major issues. This spring it was green and healthy. About 2 or 3 weeks ago I gave them all 10-10-10 feet. Then the heat came in. The leaves first looked like leaf burn then it got worse.

 

[lordy]

If you are not mixing the fert with water and just watering the trees, that could well be the prob. I have an American Elm that I believe is what you have. I keep it in morning sun only and it is suffering no leaf burn issues. I water with Dyna Gro at 1/2 tsp per gallon and pretty much use it every watering. If I recall correctly it is 7-9-5, so after dilution is fairly weak. Trees seem to like it at the recommended strength as described above. If I were you, I would stop fertilizing for a good 2 weeks and only use rain water or tap water after it has sat for 48 hrs to dechlorinate. After 2 weeks begin a very dilute feeding regimen while watering with dechlorinated or rain water.

 

[remist17]

I will
I already stopped for about 3 weeks.
I use only rain water or pond water.

 

[remist17]

Well I am totally confused. Another hornbeam is going through the same things. It first had some crunchy leaf ends. Now the leafs are turning a brownish green. This just like the one I posted.

If this was feet burn could this cause these issues? I see no bugs and no sign off mildew. I did no root work on the second tree and slip potted earlier this season.

 

[remist17]

I now have three trees in bad shape. I really think this is fertilizer burn. Is there something I can do to help this.

 

[cmeg1]

Well,right off the bat,I would think it is not fert burn.Could possibly be a product of overwinter damage to roots ,maybe a particular condition in winter caused a week tree,maybe too wet in winter?Could be a product of roots and soil,the particular soil you are using,It could also be a critter of some sort in the soil.Or it could be something that was spread by your tools,I always pass my tools through a flame before I use them.Was there any drastic cuts to the root?.Were these plants in the field and then put in a pot.What kind of soil are you using?When were they last root pruned?

 

[Paradox]

Here are some scorched leaves on a Japanese Maple

 

[remist17]

Sorry all for not responding. I have been ocupied for the last week. I had to put my dog to sleep and two trees I thinkg are dead.

I did no cutting on any of the trees. This spring I repotted all the trees in a Turface / Pine bark mix. Water is as needed or by rain. Im sure the soil could be better but the mix is 2 parts turface to one part bark.

The last photo posted helped me with some other trees which I confirmed are sun burn with this photo.

The first hornbeam in question that I posted lost all leaves and now has new growth coming out. The elm which was not posted I think is dead. There is no green under the bark and no new signs of bud break. The small hornbeam that I posted last I think is pushing new buds. There is alot of die back in the branches.

Could this be some bug that I do not see? Maybe some sort of root issues? Should I pull the one small hornbeam out of pot and look at the roots?