Brown Foxtail Palms
Last week my 12ft and 16ft foxtail palms looked beautiful. 7 days later every frond on the smaller palm is brown and the larger palms is doing the same. It is on the Gold Coast and they were growing perfect until now. Any idea what could have caused this?
This appears to be a fungal issue. There are several ways to treat this, including: cinnamon, clove oil, lavender oil, neem oil, and wettable sulfur among many other methods. This article will help: https://www.gardeningknowhow.com/ornamental/trees/palms-trees/fraying-shedding-palm-fronds.htm