I have a row of 16 Italian Cypresses, 25 years old and 50 feet tall.
I recently noticed that the upper ranges of several trees show bald areas
where you can actually see the trunk.
Would anyone know what is going on? Location is Southern California. Would
hate to cut these beautiful trees down!
Take a look: http://home.san.rr.com/iconoclast /
Great photo. Italian cypress are very prone to root rot from poo
drainage. If the soil is soggy, that could be part of the cause. If yo
can, look to see if sap is running down the trunk as there have bee
problems with a disease called canker in California. You might fin
this an interesting read even though it's from 2001. I don't agree wit
the recommended chemicals for the spider mite. There are other mor
environmentally friendly solutions (no pun intended).
From this site:
"Cypress Tree, Canker
Quite a few questions have come in about this fungus disease. It kill
or disfigures many species of cypress all over California. The symptom
are the yellowing, fading, and death of individual twigs, branches, o
tops of affected trees. Eventually spreading through the entire tre
and killing it. Death can occur any season, but most often during war
months. As the disease progresses, the fungus begins to attack th
living bark and cambium. Resinous lesions or cankers form, with heav
resin flow (less flow from old or slow growing trees) from the edges o
the canker. The cypress bark moth often invades the borders of th
cankers where they excrete large quantities of a reddish brown fras
and stimulates even more resin flow. The only area in the state tha
does not have this disease is a narrow coastal band fronted by th
Pacific Ocean. Italian, Leyland, and Monterey Cypresses are the mos
susceptible. Remove diseased branches and destroy. Spray wounds with
fungicide. Preventative spraying of a fungicide like Benomyl after th
first fall rain can be helpful."
You might also be able to get some information from your loca
I know what I would do here in Florida- get in touch with the County
Hort Agent. Those guys are smart and will look at it for free. There
might be a Master Gardener program in your county- look for it.
I find that the County Extension Office is very under-utilized, and
full of very smart people. I use their expertise in my practice [I am a
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