Majesty Palms like moist soil but not wet soil. Water When the upper 12 inches of soil are dry; typically once or twice a week, depending on the climate and time of year. Make sure it is well drained to avoid root rot. Watering frequency should be increased a little in the warmer months, and decreased in the colder months. Using filtered or distilled water can help avoid mineral buildup, keeping the plant healthy and vibrant.