- 500 litres pot, height 600-700 cm (19.6 -22.9 ft.)
There are two main commonly cultivated Washingtonia species: Washingtonia robusta ( Mexican palm, Skyduster, Petticoat Palm) and Washingtonia filifera (California fan palm). Washingtonia filifera differs from W. robusta by width of trunk, erectness of fronds, presence of strings on frond margins, gray-green color, and cold hardiness. The two species can also hybridise. Washingtonia filifera has fan-shaped greyish green fronds 1-2m across whose tips arch down. Its margins are more stringy than Washingtonia robusta. These palm trees look really attractive when old dead fronds are allowed to accumulate against the trunk giving it a shaggy appearance. The inflorescence on stalks extending beyond foliage bears small off-white flowers which produce tiny black berries. The tree is not very hardy at H1C so shelter during normal British winter. The plant itself is prone to potential pests but no diseases. Follow the guide below on how to maintain this plant. The final height is 12m (39ft) and the final width is between 2.5 m – 4 m (8.2 ft – 13.12 ft).
Latin Name: Washingtonia Robusta
English Name: Mexican Fan Palm, Skyduster
Foliage Type: Evergreen
Flower: White (with brown fruit)
Flowering Period: Spring – Summer
Suggested Location: Outdoor.
Suggested Soil Type: Well-drained. Loam
Suggested Exposure to Sunlight: Full Sun
Suggested Exposure to Weather: Sheltered
Hardiness Rating: Low (H1C)
Lowest Temperature Tolerance: 5 °C to 10 °C (41 °F to 50 °F)
Growth Habit: Columnar/Upright
Pests: Glasshouse red spider mite and scale insects may be troublesome
Diseases: Generally disease-free
Cultivation: Grow under glass in loam-based compost with added leaf mould and sharp sand, in full light. Water moderately, provide moderate humidity when in growth and apply a liquid fertiliser monthly during the summer. Water sparingly in winter . See palm cultivation indoors
Propagation: Propagate by seed
Pruning: Needs no regular pruning, but dead leaves may be removed by cutting close to the leaf base leaving stubs to create a neat pattern
Suggested planting locations and garden types: Architectural Patio & Container Plants
Final Height: 12 m (39 ft)
Final Sideways Spread: 2.5 m – 4 m (8.2 ft – 13.12 ft)
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