Foxtail Palm pests diseases deficiencies
Foxtail Palm (Wodyetia bifurcata) in south Florida suffer from pest, diseases, and deficiencies but can very simply be treated for most of them.
Insect Pests of Foxtail Palms
Banana moth larvae and grubs
Most of these pests can be controlled with a simple root drench with the active ingredient Imidacloprid made to the base of the truck once per year. With a products like Dominion 2L.
Disease of Foxtail Palms
Leaf spots from Anthracnose (Colletorichum), Diplodia, Exserohilum, Petalotiopsis, and Phomopsis. Do appear on the foliage of the Foxtail Palm. If treated at the first sign with the least environmental impact with a copper fungicide such as CuPro 5000 or a foliar systemic spray of Heritage or Cleary 3336. Palms may be to tall to spray with any handheld sprayer so a professional who has the right equipment may need to apply it.
Ganoderma butt rot caused by Ganoderma zonatum is a deadly disease that has no treatment or cure, it is apparent by a conch like shell on the side of the trunk of a dead or dyeing foxtail palm.
Nutritional Deficiencies of Foxtail Palms
Foxtail Palms will suffer from severe deficiencies and chlorosis the inability to produce chlorophyll. From boron to potassium, these problems can be avoided by fertilizing foxtail palms every 3 to 4 months with a Florida Palm Special Fertilizer 8-2-12 with up to 5 pounds per palm spread out over the root system 1 foot away from the trunk, avoid band fertilizer applications like a belt around the palm.
Palms that have severe deficiencies may take up to a year or more to recover, waiting to fertilizer may cause the palm to go into severe where it is impossible to recover from decline.
Also avoid direct irrigation of the roots and truck as this can cause root and trunk rotting.