Washingtonia robusta
|
 |
| Common
Names |
Washington palm,
Mexican fan palm |
| Family |
Coryphoideae |
| Origin |
Mexico |
| Tribe |
Corypheae |
Hardiness
(Zone and Temperature) |
8-11 |
| Typical
Height |
70-100' |
| Growth
rate |
Fast |
| Habit |
Solitary; canopy
of about 30 leaves |
| Trunk |
Pale gray, closely
ringed, fissured; swollen at base; often covered for years with
a long shag of dead leaves |
|
Leaf Type |
Costapalmate,
induplicate; divided halfway or more into pointed, ribbed, drooping
segments with white threads in between on younger plants |
| Foliage |
Bright green |
| Leaf
Size |
4-6' wide; segments
2-4' long; 1.5" wide |
| Petiole |
3-4' long, orange;
sharp teeth on margin; base reddish-brown and split |
| Crown
shaft |
3-4' long, orange;
sharp teeth on margin; base reddish-brown and split |
| Inflorescence |
8-12' long,
branched, borne from among the leaf bases and pendulous |
| Gender |
Bisexual flowers |
| Flower
Color |
Off-white |
| Fruit
Size/Color |
3/8" diameter;
Brownish Black |
| Irritant |
No |
| Salt
Tolerance |
Moderate |
| Drought
Tolerance |
High |
| Soil
Requirements |
Widely adaptable |
| Light
Requirements |
High |
| Nutrition
Requirements |
Moderate |
| Common
Uses |
Specimen tree,
street tree |
| Propagation |
Seed, germinating
readily in 6 weeks to 2 months |
| Human
Hazards |
Spiny |
| Pests |
Palmetto weevils,
scales |
| Diseases |
Phytophthora
bud rot, graphiola false smut, ganoderma, pestalotiopsis, fusarium
wilt (in Florida) |
| Cultivars |
None |
