ESTABLISHED PALM CARE

The root ball and surrounding backfill should remain evenly moist, but never saturated during the first four to six months after installation. Supplementary irrigation is necessary unless adequate rainfall is received during this time period.

It is important to remember that until new roots penetrate the soil all the roots are coffined to the root-ball and regular watering is essential to maintain the health of the palm.

Newly transplanted specimen-sized palms should not be expected to produce a great deal of new top growth during the first year after transplanting; much of the palm's energy reserves will (and should) be channeled into root growth.

In order to help with root growth, humiates and benefical fungus such mycorrhizal fungi can be added to the soil. This fungus colonizes the root system of the palm enabling it to access more nutrients and moisture more quickly and aids in establishment. Although it is easier to do the application at the time of planting, it can also be added to trees already in the ground.

A light surface application of a slow-release granular fertilizer can be banded at the margins of the root ball three to four months after transplanting. A foliar spray of soluble micronutrients may be beneficial during this period, since root absorption activity is limited. Foliar fertilization is an inefficient way to supply macronutrients such as potassium and magnesium because the relatively high amounts required by the palms. When the appearance of new leaves indicates that establishment has been successful, a regular fertilization program can begin.