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Pseudophoenix sargentii


PalmatierMeg

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My large about-to-trunk Pseudophoenix sargentii needs help and I need advice. I was cleaning up around the front garden tonight when I noticed this oozing lesion(s) on the crownshaft. The whole area looks nasty and raw. Can anyone tell me what's going on and what I can do to heal/save this palm? It's been in the ground nearly 5 years and I'll be devastated if I lose it. I took these photos before dark.

Pseudophoenix crownshaft with lesions

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Closeup of lesions

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Meg

Palms of Victory I shall wear

Cape Coral (It's Just Paradise)
Florida
Zone 10A on the Isabelle Canal
Elevation: 15 feet

I'd like to be under the sea in an octopus' garden in the shade.

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Meg, the same thing happened to mine last year. From what I have been able to learn over the past year, this is a very recent fungal problem affecting many Pseudophoenix palms here in south Florida (and now apparently southwest FL as well). I took samples from my palm to Dr. Aaron Palmateer, the plant pathologist at the Tropical Research & Education Center in Homestead, and he was not able to isolate any kind of fungal pathogen from them. However, I just spoke with him again this week and he suspects that it is Phytophthora doing it. He recommended using a product called Pageant, which is a broad spectrum fungicide that has shown good efficacy against other types of Phytophthora in scientific trials. Below are a few photos of my infected P. sargentii... sadly, it is so badly damaged that I no longer have any interest in trying to save it because the trunk is going to be permanently scarred.

Before I learned about Pageant (which was literally four days ago), I was treating my palm with Zerotol, which helped slow it down a little bit. My immediate recommendation for you (and I do mean immediate) would be to buy 2-3 bottles of hydrogen peroxide from the store tomorrow and pour them all over the crownshaft and bud region. Then try to find someone with a pesticide applicator license ASAP and have them apply Pageant. For long-term control, I would recommend rotating Pageant and Heritage throughout the spring and summer, and then hope for the best.

Please keep us updated on your progress. I would also be interested in hearing from anyone else who has this problem and what you have used to treat it and if the treatments were successful.

Jody

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Thanks for the info, Jody. What terrible news! Is this the "new" disease affecting Pseudophoenix that I've heard about? I sprayed the crownshaft and growing point area with H2O2. I know fungicides are often species-specific but is there any I can use till I call around Monday? I have daconil, Captan, mancozeb.

Meg

Palms of Victory I shall wear

Cape Coral (It's Just Paradise)
Florida
Zone 10A on the Isabelle Canal
Elevation: 15 feet

I'd like to be under the sea in an octopus' garden in the shade.

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That sucks if it is a fungi.

I would cut all watering and pull back that mulch and let the root crown breath.

I have a bunch of buccaneers and I never water them. I don't think they need it. Wet and moist encourages fungi.

Cold and wet, even worse.

Good luck!

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Thanks for the info, Jody. What terrible news! Is this the "new" disease affecting Pseudophoenix that I've heard about? I sprayed the crownshaft and growing point area with H2O2. I know fungicides are often species-specific but is there any I can use till I call around Monday? I have daconil, Captan, mancozeb.

Meg, none of those are going to work on phytophthora. The H2O2 should slow it down. Try to find some Pageant or Heritage next week.

Jody

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Mine looks the same way as do a couple other mature Pseudo's in the neighborhood(Satellite Beach)East Coast central FL. It's from the cold last year. Mine didn't bloom this year either.

Warrior Palm Princess, Satellite Beach, Florida

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Meg, also check out Subdue and Aliette, both are listed to control phytophthora...if in fact that is what is causing this.

Rusty

Rusty Bell

Pine Island - the Ex-Pat part of Lee County, Fl , USA

Zone 10b, life in the subs!...except when it isn't....

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