The regal queen palm may suit your landscape well if the temperature never dips below freezing. Hardy only in USDA zones 9 through 11, 25-degree F weather will damage this South American native, and a drop to 20 degrees F will kill it. While you might never guess it from the plant's exotic appearance, queen palms are low-maintenance specimens when they get established. Provide Syagrus romanzoffiana with constant sunshine, plenty of head room, protection from high winds, and adequate food and water and Her Majesty will grace your property with charm and beauty for years to come. Plant your queen palm as soon as soil temperature rises above 65 degrees F.
Plant the queen palm in sandy, acidic soil with full sun exposure and shelter from strong winds.
Water the queen palm while it's still in the growing pot if it's dry. Keep the roots moist while the planting sire is prepared. Dig a hole as wide as the palm's root ball. Position the tree in the hole so that it will be planted at the same depth that it occupied in its previous container.
Work a slow-release 13-3-13 or 12-4-12 palm fertilizer with micronutrients and manganese into the backfill soil. Follow the fertilizer's label instructions carefully.
Apply 2 to 3 inches of water into the planting hole. Add backfill to help absorb the moisture, then add about 2 more inches of water. Gently rock the plant to and fro, back and forth occasionally to eliminate air pockets. Continue alternately watering and backfilling, firming as you go.
Mulch the queen palm to a depth of 2 to 3 inches to help retain moisture while controlling weed growth.
Water the newly planted queen palm slowly and thoroughly each day for about two weeks. Allow the moisture to soak in to the top 1 to 1-½ feet of soil. Cut back watering to every other day until new growth emerges. The young plant should be watered at least two times weekly thereafter for the next six months.
Prune the limbs of large trees that may obstruct the amount of sunlight the queen palm receives. Move any large objects that overshadow the plant.
Feed the tree palm a slow-release 13-3-13 or 12-4-12 palm fertilizer with micronutrients and manganese in the fall. Fertilize at least once every spring and fall thereafter, with four times yearly being preferable. Follow the manufacturer's recommendations carefully.
Water the established queen palm thoroughly during dry spells by soaking the base of the trunk two or three times monthly with a garden hose.