Weeping Washintonias in central Phx!

tugbrethilNovember 23, 2009

This fall, about 60% of the California Fan Palms in my neighborhood have started dripping sticky sap all over everything below them! Mexican Fan Palms and hybrids don't seem to be affected the same way, but the old neighborhood I live in doesn't have a lot of those to compare with. Is there a new pest or disease going around which does that? Is there a treatment? Or should I just become resigned to wiping third-rate "jaggery" off my car in the morning? I've got this posted on the palms forum, too, but I wanted to get the desert mavens' take, also.

Thank you!

Kevin : ()

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grant_in_arizona(USDA Z9 Scottsdale AZ)

No clue here, but it sounds unfortunate. Did anyone at the palm forum have any ideas? Interesting development, thanks for mentioning it!

Take care and keep us posted,

    Bookmark   December 6, 2009 at 12:16PM
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The upshot at the Palm Forum is that I need to talk to the Cooperative Extension, or the Arizona Chapter of the International Palm Society. I'm a Master Gardener myself, but I still haven't had a chance to talk to their plant pathologist yet (my schedule, not their fault) and I haven't yet gotten in contact with the Palm Society. Will post more info as available. I get the impression that I'm the only one to notice this.

    Bookmark   December 7, 2009 at 5:38PM
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grant_in_arizona(USDA Z9 Scottsdale AZ)

This *is* interesting. Let us know if you hear anything definitive. Take care, Grant.

    Bookmark   December 13, 2009 at 7:57PM
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softmentor(z9/sunset13 CA desert)

Is it possible the sap is the syrup from the fruit?
Can you tall where exactly it is coming from? the fruit, the fruit stalks, the fronds, the trunk?
Arthur the date palm guy

    Bookmark   December 18, 2009 at 10:17PM
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Hmm. I've never seen the fruit producing liquid syrup before. I do know what an unholy, oily mess they make when they drop and I step on them. Unfortunately, I can't see well enough through the shag and old flower stalks to tell exactly what's dripping, nor have I ever managed to catch it in the drip. It seems to have tapered off quite a bit since our serious (LOL) cold weather started, but I don't know if it will start up again when the weather gets warmer.

Mea culpa--I still haven't gotten hold of the Palm Society. I promise I will try again, as soon as time, computer, and wetware intersect once more!

Kevin : /

    Bookmark   December 19, 2009 at 1:39AM
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