Weak Looking Palms :(

[Alexpalms]

Hello can someone please let me know what my palms are in need of? Lack of nutrient? I recently fertilized with Palm Tree Food. This palms particularly seems to be looking weak for a while now. I saw on Youtube an arborist recommended muriatic acid due to ph levels being too high. Any help is greatly appreciated.

[Fusca]

2 hours ago, Alexpalms said:

arborist recommended muriatic acid due to ph levels being too high.

I can't imagine that doing any good for any plant!  I've used sulfur pellets as a temporary fix for lowering soil pH.  My clay is high in calcium and low in nitrogen so I am staying away from using gypsum.  As far as nutritional issues with your palm, I'm sure others with more experience will chime in with their recommendations.  Welcome to Palmtalk!

[awkonradi]

I think your palms are Phoenix robelenni, and I think they look healthy.   Given the length of their trunks, I imagine they have been thriving in that location for years.  Have you seen any decline?

[Looking Glass]

They look over-trimmed and underwatered.   These are fairly susceptible to potassium and magnesium deficiency and enjoy a lot of water.   When deficient, lower fronds start to yellow, as the palms pull nutrients from them, and the yellow fronds look bad, so people cut the yellowing fronds off.  This takes away more nutrients, making the palm more deficient, causing the palms to pull from, and yellow, the next oldest leaves…. And the cycles continues.  

Older fronds should go from uniform yellow, to orange, to dry- brown quite rapidly when it’s time for them to die.   If they linger partially yellow, the palm is telling you it’s deficient.   Usually in Mg/K in older leaves.   Using a good quality granular palm-specific fertilizer, and additional langbeinite, and a lot of water in hot months works wonders for these.   

Some of this depends on your soil type and local weather.  
 

This guy is ready for a hit of langbeinite….

 

This one, 10 feet away, is full….