What is killing my queen palm?

Fixable causes (the most common)

• Potassium deficiency: oldest fronds yellow and develop orange-brown flecking, tips frizzle and die back. The palm looks thin and ragged from the bottom up over months.
• Magnesium deficiency: older fronds show broad yellow edges with a green center. Queens are known for this in alkaline soil.
• Manganese deficiency ("frizzle top"): new top growth emerges weak, yellow, and frizzled. This one kills if untreated, but caught early it responds well to treatment. Alkaline soil like ours locks manganese away from queen palm roots.
• Water problems: queens inside daily-run turf irrigation zones sit too wet; queens in unirrigated corners go too dry in spring. Both look like an unexplained decline.

Fatal causes (less common, more urgent)

• Fusarium decline: fronds die one-sided or bottom-up over weeks, often with a distinctive one-sided browning on individual fronds. No cure; confirmation changes how you prune, what you replant, and whether nearby palms are at risk.
• Ganoderma butt rot: a woody shelf "conk" at the trunk base, a thinning canopy, and internal trunk rot. It cannot be treated, and it creates a wind-failure hazard. Compromised palms near the house should be assessed promptly.

Why speed matters

A deficiency and a disease can look similar at first. On the deficiency path, months of the wrong guess just delays recovery. On the disease path, delay can mean spread to other palms, or a heavy trunk with a rotting core standing near your roof. A single diagnosis visit separates a treatable palm from a hazard, and if it is treatable, you leave with the exact treatment plan.