Orange tree not healthy

cjalbertsonSeptember 22, 2012

I have an orange tree that is unhealthy. Two others are doing very well so the climate is good. (I'm in So. Calif. near the beach) I'm using fertilizer that says "Citrus" on the bag and it seems t work on the other trees as they have a dark green almost blueish color and grow well. This tree does not grow well, the leaves fall off and are Yellow. It looks like lack of water but you see on the photos the grass around the tree is doing OK. I fill the basin around the tree with water a few times a week. The soil drains well here as it is mostly sand. A few years ago when I planted it I used a bag soil mulch-like stuff that was sold as being for citrus and cactus plants. The area gets some sun and some indirect sun. You can see in the photos that I have so many twiggs and not enough leaves. It did resently flower but I dout there will be any fruit I put some photos on "dropbox" here:

It was worse but I started an aggressive watering and fertile program half a year ago and now it is better, gom of the leaves are green now.

You likely need more information. Just ask.

Here is a link that might be useful: Photos

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hmm, you could try and clear out the grass, about a 2' radius, and add some mulch.

how often do you fertilize?

    Bookmark   September 22, 2012 at 6:15PM
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jean001a(Portland OR 7b)

What's the thing around the trunk at the base of the tree?

Could be hiding some serious damage. And if it's a rigid material, your tree will eventually be girdled.

If it's there to avoid damage to the trunk, do as previously posted. Clear a two-foot diameter area around the base of the tree. Ideal would be out to the drip line.

Frankly, if that were my plant,I'd replace it. If you keep it, it will be a long, long road back to health, if it ever gets there.

who gardened for 30-some years in SoCal including lemon, limes and oranges.

    Bookmark   September 22, 2012 at 11:33PM
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jean001a(Portland OR 7b)

And if you re-plant, make certain you allow much more room between the tree and the structure. (A house, right?)

    Bookmark   September 22, 2012 at 11:35PM
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Since the others are healthy, I would suspect Phytophera in the root zone; if it is, another tree planted in the same place will have the same problem. In any case, I would take out this tree; it doesn't seem worth saving.
Do you know what the rootstock is? Some rootstocks are more susceptible to phytophera than others.

    Bookmark   September 23, 2012 at 12:10PM
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hoosierquilt USDA 10A Sunset 23 Vista CA(10b Sunset 23)

I am in agreement with John, here. Your tree to me has classic signs of Phytophthora Root Rot. Same thing I believe I'm dealing with at my place (I'm about 6 miles from the beach). I would remove the tree. You can try to pot it up or replant it, and treat the new area by using treatment options listed in the link I provided you. It's an issue for us in S. Calif, especially in Orange County and San Diego County, where our weather by the beach is ideal for many kinds of fungal infections to proliferate, especially in the late winter/early spring when temps and environmental conditions are ideal (rainy season plus idea temps.)

Patty S.

Here is a link that might be useful: UCIPM: Phytophthora Root Rot in Citrus

    Bookmark   September 23, 2012 at 8:35PM
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Thanks, Patty. It is not a problem with Macrophylla; but when I was growing on Carrizo, I had a lot of problems.

    Bookmark   September 23, 2012 at 9:42PM
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