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Old August 16th, 2007, 07:15 PM
belmont couple belmont couple is offline
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Help! Old Orange Tree Suddenly Dying

Hi all,

We have a ~25 yr old orange tree here in the SF Bay Area that started turning yellow a few weeks ago in the middle of a summer heat surge and has since has begun to lose leaves by the gross and drop the remaining oranges it held from last winter. I don't see any new fruit budding either and the top of the tree is becoming bare.

We changed the watering around in the early summer and it may be getting more water from a nearby sprinkler than it has before. We tested the soil on one side and found it very moist. We put in some fertilizer sticks and have redirected the sprinkler starting a few days ago but wonder if it's too late to save it (as you see, we're assuming it's overwatered).

Any advice - is it too late to save the tree??
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Old August 16th, 2007, 09:20 PM
belmont couple belmont couple is offline
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Re: Help! Old Orange Tree Suddenly Dying

add on after reading more posts about similar issues. Over the last two years, blue star creeper has been growing underneath the tree but we still leave the last 2 ft diameter around the trunk open (about 8ft diameter drip line) and prior to us moving in there was grass or moss beneath the tree. Also, back in the beginning of the summer I also tried some citrus fertilizer but put most of it directly near the 2ft ring instead of dispersed around the 8ft ring. Wasn't much. So - now what should I do???
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Old August 17th, 2007, 12:40 PM
skeeterbug skeeterbug is offline
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Re: Help! Old Orange Tree Suddenly Dying

It is very possible that those symptoms are from overwatering-- if so stopping the watering should eliminate the problem and the tree should slowly recover. Ingound trees, once established, do not need watering except during a drought.

Skeet
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Old August 17th, 2007, 04:00 PM
belmont couple belmont couple is offline
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Re: Help! Old Orange Tree Suddenly Dying

thanks - any other option that we should be worried about or check into? it has been regularly watered for a few years but this year it did get a bit more with a repositioning of a sprinkler head

also - is the blue star creeper going to deplete the O2 in the soil?
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Old August 18th, 2007, 07:19 PM
skeeterbug skeeterbug is offline
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Re: Help! Old Orange Tree Suddenly Dying

I don't think the creeper will cause much depletion of the oxygen, but it will compete for nutrients and citrus trees are heavy feeders.

Citrus should be fertilized once a month during the summer with a fertilizer containing trace minerals, discontinue fertilizer about 3 months before frost so that the tree can cold harden.
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Old August 20th, 2007, 10:12 PM
belmont couple belmont couple is offline
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Re: Help! Old Orange Tree Suddenly Dying

thanks - it's a bit nerve racking as the tree is slowly becoming bare. The soil is quite hard now (clay around here) on the upper slope but still damp on the lower part.

No real frost around here to worry about but we'll stop fertilizing around October just in case. In the meantime, we have put 3 of the citrus fertilizer spikes you get at places like Home Depot.
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