They've been in the ground about a year and a half and about 6 months ago this started happening. They still sprout new fronds that look good for a week or so and then the same thing happens. I have sprayed them with a systemic and fertilized them, but it keeps happening. Both palms on either side of the patio look the same. Ideas?
Took pics to the local nursery when it started. They recommended the systemic, which hasn't helped thus far. I figured I would throw it out to the beeb and will work on the botanist this week.
You might try the local ag extension office of your state university. They might have more specific knowledge. It does look like some sort of fungus, so the stuff they suggested may help some. A local biologist/botanist familiar with the plant diseases common in your area may be able to provide more specific treatment suggestions.
Have a few large Oaks in the yard already. Wife wanted something tropical by the patio and picked palms, so she got palms.
Did you drench that fungicide on the roots or did you spray it? The fungicide you have there is much much weaker than the same chemical ones we used in commercial greenhouse production. Worked super well on certain diseases and poor to moderate on others. I never used it leaf spots/blight. Which is what you have there. If you haven't made a follow up application of what you have try that. Then you could try some type of copper spray as the next step. That should be readily available a nursery store I would think.
The rates for a drench and foliar spray are different on that. That chemical when used as a drench is ineffective on foliar diseases as well. In my opinion I would track down a copper salt spray to use. Just my opionion.
I'm with the ambulance chaser. I don't know why people go to all the trouble of trying to grow palms out of their native environment. We had one on either side of the front steps. I wanted them gone but the wife liked them. The temperature got down into the teens here for the first time since global warming started and killed them dead. What a shame! Dwarf camellias going in instead.