Please post pictures of your citrus tree leaves that show signs of pests, disease or other problems. If you see a picture and can help identify the problem and can offer a solution please do so. I would like to get pictures of different leaves and their problems so those of us new to citrus can learn to identify problems early and treat as soon as possible. I am sure that all of the issues that I have with my trees have been dealt with on the forum but I am having a hard time locating the answers to my questions. So I thought I would try to start a thread specifically about leaves since that is where I notice my problems with my citrus first. Thank you in advance for all input.

This is from my Meyer Lemon - this is the only leaf that looks like this at the moment. I pulled it off. This is the front of the leaf- the spots are black

This is the back of the same leaf above- it is creased and torn because I sort of crushed it and threw it away before I decided to take a picture

This is the front of a leaf from the Meyer still on the tree - there are several like this on the tree - dark spots are rust in color

This is the back of the Meyer leaf above - damage is rust in color

This is my Mandarin tree - attempting to show damage done by Swallowtail butterfly cats- I did not know what they were and I pulled them off and smashed them. Later I learned they would have become beautiful butterflies. I am going to try to find some kind of host plant and next time I will relocate them to that plant if I find them. They eat leaves FAST

This is what the leaves of my Mexican Lime looked like when I got it - new growth is not curled and looks good. Just curiuos what caused the curling. The residue on the leaf is from spraying with fish emulsion last evening. Check the leaf with the hole - to the right of the hole - is that a red mite?

This is the front of a leaf from my Lemon Drop tree.

This is the back of the same leaf

Last night I sprayed all with fish emulsion/water on the tops and underneath leaves. Pictures were taken today. I have just started using FP 1/2 tsp in 2 gallons of water this week. I scrubbed the Meyer leaves with soapy water last night - the rust spots did not come off.

Kim

Where is Jane?

I think all these questions should be at the pest and disease forums...You will get these smart members and others to help you almost immediately!!

Mike

I will look for the pest and disease forums. I did not know about those. I get a total FAIL for gardenweb forum posting this week. I tried to clarify what I was trying to do and created a duplicate thread (thought I could delete the first one) and now I see I did it on the wrong forum. I am new to all of this. I was just trying to create a place for those of us new to citrus to be able to compare signs and symptoms of pests and disease of our tress in one place. I will check out the pest/disease form.

Kim

The smaller leaves with the creamy yellow specks appear to have a scale insect, although not one that we see here in central Florida. Can you scrape them off easily with a fingernail? If so, you should probably spray with something for scales. Depending on the species, oil alone may do it, or you may need a true insecticide.

Malcolm

Malcolm M. Manners, Ph.D.
John and Ruth Tyndall Professor of Citrus Science
Florida Southern College
Lakeland

Thank you so much for your input. I live in Fort Worth, Texas. I noticed that black spots on the Meyer after we had a period of over a week with rainy and humid conditions. There is one other leaf on the Meyer that looks like the picture. The Meyer was purchased a few months ago here in Fort Worth. I am not sure if greasy spot is common here in Texas or not. The weather here now is very hot (100F) and dry - at least this week.

Those yellow specks on the small leaves (Lemon Drop tree) do not scrape off easily. I have tried to scrape them and they do not come off. I will investigate to find pictures of scale to compare to and do a treatment.

I really appreciate the help.
Kim

Kim

How come you don't get some good fish emulsion and consistently spray your plants down with it in water?

It works..No bug except for flies here likes the emulsion, and it coats any harmful insect with oils while it shines your leaves..Why not enema oil while this stuff suffocates any pest while it also treats diseases?

If they were my trees, you bet your boots I would be spraying them tomorrow..

Mike

I have some fish emulsion. I also went today and got BioNeem oil. This evening it is supposed to cool down to 77F. I read on one of your old posts that you have used a tiny bit of neem with FE and maybe some other ingredients to spray your trees. Is that right? If so could you repeat the recipe here? I would like to spray everything this evening after it cools off some. I am anxious to try some treatments. Thanks!
Kim

It is a mass spray and many if not all my plants seem to love this, I do it every week..

If you have any plants where the FE didn't seen to kill all your pests, then use the neem oil in a spray bottle as directed to suffocate any pests right away that the FE didn't do...But first try the FE, and you will notice a big difference on most your pants..ok. Let us know how they look by the am with just the FE..

Good luck

Mike

Kim

I have to say I am feeling much better. I have been so frustrated lately after working so hard to get my citrus in the right mix, get my Foliage Pro, not over-water, etc. only to discover now that I have a multitude of pests and possibly some disease in my trees. While I was doing my FE treatment tonight I was really having a pity-party for myself. I came inside and looked over some old posts regarding the use of Neem oil (I am really worried about using it right now because it is 100F during the day here). I ran across some old posts of yours from late 2008 and you seemed to be battling the multiple unknown pest issue then. Since I have seen pics of your trees now I feel much more hopeful. Obviously I am not the first to struggle through the learning curve to figure out what works best in my situation. Thanks to the forum and so many helpful folks I am feeling slightly hopeful.
Kim

Glad your feeling much better, now let us see if your plants are....:-)

Hope everything turns our for you all..

Mike

Mike do you think the FE treatment would work on grasshoppers?

http://www.ipm.ucdavis.edu/PMG/C107/m107bpleaftwigdis.html?printpage

HS14100floridacitrusleafporblems.pdf
HS 890 University of Florida HS12200 IAS

You may find these sites useful.

Yehuda

Do you think it is grasshoppers doing that? I never heard of them likeing any kind of citrus at all...

I know it works for the common destructive sucking pest most of us deal with, at least the ones that I ahve dealt with..I would be curious to know if it works for others..

Good luck..You know I had a few leaves do this to me too this summer, and so did Josh..I ahve never seen one bug while chewing though...lol

Mike...

Thank you so much for adding the links. The information is great.

Kim

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I'd bet money and lots of it on the grasshopper's. I bought a beautiful tree in June 2011 (unfortunately I don't have pic's of it before the attack), but here are pics just about a month later: Lemon Aid

I just posted pics of this tree seven months later...it is making a slow recovery.