Frequency: 2 to 3 times per year
The Queen Palm is the most misunderstood of all the Palm species in Arizona. These normally hearty Palms come from the sandy, tropical soils of the Gulf Coast and Brazil. They were chosen as a desert transplant because they are a non-aggressive rooter and can tolerate extreme heat. The problem is that they are a Tropical, rather than Desert Palm and require different nutrients to thrive. After several years in our soil, the lack of nutrients they would naturally absorb in their native soil becomes evident in their appearance. A well-formulated Palm fertilizer should contain all the minerals important to the health of Tropical Palms. This includes adequate amounts of nitrogen, magnesium, sulfur, iron, copper, and especially manganese. If your Queen Palms are looking stressed or a bit shabby, we recommend having deep root feeders installed and regular injections until health is restored. A 2- to 3-times-a-year application after recovery maintains health for most Queen Palms.
Note: Some Palms reach a point of deteriorated health from which recovery is not possible. Determining this point is not always possible, we've seen some "iffy" Palms recover while others continue to deteriorate in spite of treatment. In some cases, it may be more economical to remove and replace the sickly Palm.