Troubled Lemon Tree

12 years ago

I have had this tree for about 8 years. Last year it produced 100's of perfect lemons that I picked right before the week-long freeze in the central valley. The tree itself suffered some damage as you can see in the images with the split branches and the outright dead branches at the extremities. After the freeze, it lost all its leaves. New ones came back with a vengeance this Spring, but after a month or two, they are starting to look really bad. They are yellow at the edges, some are brown at the tips, and some are curled. New blossoms started a month ago, but they all dropped. I'm also seeing some insects. Photos attached.
I have sprayed with a fungicide/insecticide (Bonide) and fertilized with Miracle Grow Citrus fertilizer as I have in years past.
Is there something else I can do to help this tree recover?

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Comments (7)

Goody122
Original Author
12 years ago
Branches splitting from the freeze.
Goody122
Original Author
12 years ago
Smaller branches got it worse.
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Goody122
Original Author
12 years ago
Yellowed leaves.
Goody122
Original Author
12 years ago
And insects!
Goody122
Original Author
12 years ago
Any idea what these are? Whatever was in there, they have hatched.

I'm new on this forum, and I really appreciate the help.
jean001a
12 years ago
The final image shows katydid eggs.

As concerns the winter damage, I would wait and see what will happen. Nothing to do but wait-and-see.

Jean,
who gardened for 30-some years in LB, CA
nikthegreek
12 years ago
I have been taught to prune away in spring any wood seriously damaged by frost. Not doing that just invites pests and disease. Maybe this is a wrong practice but I have not regretted it yet.

If leaves affected are not on damaged stems, I would also fertilize heavily with nitrogen and potassium (since you had a heavy crop last year) including elements of Mg and Mn (at least). The leaves appear macroscopically to suffer from Mg and maybe N and Mn deficiency. Do the trunk and root crown appear healthy?
Nik
(gardening citrus and roses in a med climate)