I hope that this is easy have a Phoenix Sylvestris that has about 7 feet of wood. I am seeing yellow spots on many of the leaflets. Another thing that I am seeing is the new growth looks to be brown and drooping... a couple have fallen. I hope that it just needs some manganese...or magnesium. I typically just give it fish emulations and it has been doing good up until now. I have though...seen the yellow spots for 6 months + and have not addressed the situation. Any help would be appreciated...would hate to loose this plant.
Concerned about my Phoenix Sylvestris
palmbob Acton, CA(Zone 8b) Jul 08, 2014
If yellow spots only on oldest leaves, possibly potassium deficiency. If randomly spread about, possibly magnesium