Frequency: The frequency with which landscape palms need to be fertilzed depends greatly on the type of soil in which they are planted and the amount of rainfall (or irrigation) that they will recieve. Palms planted in poor,shallow soils coupled with heavy rainfall (or irrigation) during the growing season results in a very low natural reservoir of essential plant nutrients. Mature palms 10' and taller should recieve a complete granular palm fertilizer three to four times a year at a rate of 5-8 lbs each application. Dropping below a minimum of two applications, even for the most budget conscious maintenance shedules, is not recommended. In soils of higher quality, the nutrient holding capacity of these soils should allow less frequent application of fertilzer. Elsewhere, palms planted in loamy, organic, or clay based soils may also get by with less fertilzer. Use a Palm fertilizer containing additional magnesium and a complete micronutrient amendment. Nitrogen and Potassium rates in the formation should be equivalent, and some or all of both elements should be available in slow release form.

Where to apply: Dry, granular fertilizers should be broadcast or banded under the canopy of the palm, but should not be placed up against the trunk where newley emerging roots may be injured. If granular fertilizers will be used in conjunction with drip irrigation systems, the fertilizer should be banded where the water can wash in the fertilizer.

Reasonable Formula: A reasonable formula to use is 1/2 lbs of fertilizer per 2 feet of overall height.