Fan shaped glossy frond like foliage grows out of a central trunk like stalk. Mature palms can reach up to 100ft but the growth rate is only about 1ft per year. Growing conditions Washingtonia palms are native to Mexico. They prefer a well lit spot with bright sunlight & warm temperatures. Quirky fact Mature Washingtonia palms are tall & slender topped with a clump of fan shaped leaves which gives them their nickname of &8216;skydusters&8217;. Detailed care instructions What are the light requirements for Washingtonia palms? Plant in a bright area with filtered sunlight. A few hours of direct sunlight each day will be beneficial. How much water do they need? Keep well watered in the summer months don&8217;t allow the soil to dry out completely between watering but also don&8217;t leave it sitting in water. Water less over the winter months. Do they have any special temperature requirements? Average indoor temperatures through the spring & summer, keep cooler in the winter but avoid drafts & cold air. Do Washingtonia palms need much humidity? They will flourish in a more humid environment. The main reason for the humidity is to stop the ends of the fronds from going brown. How much fertiliser do they require? A liquid house plant feed every month or so in the growing season (spring & summer) will be sufficient. What type of soil do they prefer? Use general use indoor plant potting soil. When should I repot? The plant is very slow growing so will not need regular re-potting. Will they need any grooming? Prune your palm as needed, to remove discoloured, diseased, damaged or dead fronds. Use sharp sterile pruning shears to make cuts through the fronds to prevent infection. How are they propagated? Washingtonia palms are propagated from seed in the wild & by harvesting immature trunks commercially. Troubleshooting Problems with Washingtonia palms The ends of the fronds are going brown, why? This is probably from lack of humidity, stand the plant in a tray of wet pebbles to increase the humidity around the palm. The fronds have spots on them, what are these? These are most likely caused by a fungal infection & are best treated with a house plant fungicide. The Washingtonia palm is susceptible to insect infestation from common indoor plant bugs such as Mealy bugs & Spider mites. These can be treated with house plant insecticide.