Trees and shrubs

Washingtonia: a true ornamental palm


Washingtonia is a very large, cold-resistant and easy-to-grow palm tree.

In summary, what you need to know:

Last name : Washingtonia filifera or robusta
Family : Arecaceae
Type : Tree, palm tree

Height
: 15 to 20 m
Exposure : Sunny
Ground : Rich enough

Foliage
: Persistent -Flowering : Insignificant

It is used in our climates because it can resist down to -10 ° without any problem.

Washingtonia plantation

It is recommended to plant washingtoniain autumn in order to promote rooting before winter if it is not too cold in your area in winter.

If on the contrary thewinter can be cold and wet in your region, prefer a plantation in spring.

In all cases, use a mixture of soil, potting soil and river sand to facilitate drainage.

Choose a good place sunny and rather sheltered from strong winds.

Planting preparation is important because it is what will condition the good growth of your washingtonia.

  • Make a hole at least 1.5 to 2 times the size of the container / jar you bought it in
  • Bring river sand to the bottom of the hole to ensure good drainage
  • Fill with a mixture of garden soil and potting soil
  • Place your washingtonia so that the lowest point of the palm tree is slightly raised from the ground (this prevents water from stagnating at the foot of the cordyline)

Regular but measured watering from the first heat is essential the first year after planting.

Washingtonia maintenance

No pruning is necessary but it is important to remove the dried out fins as you go.

Watering washingtonia:

Usually this is washingtonia's growing season.

In case of drought or very hot weather, water regularly without flooding the foot because washingtonia does not like too much water.

Watering must therefore be regular but measured so as not to suffocate the roots of washingtonia.
We can say that 1 to 2 watering (s) per week is often sufficient.

In the spring, you can bring him somegranular fertilizer that you will put on the cordyline and possibly repeat the operation during the summer.

Washingtonia size:

You can choose to leave it without doing anything, it will naturally shed its bottom leaves.

On the other hand, if you don't want to keep the leaves drying out, remove them as you go.

Good to know : Avoid at all costs cutting the head of washingtonia.

To know about washingtonia

If you want to see very large washingtonia in its natural state, head to Mexico, the country it is from, or California for the filifera.

He may be with the hemp palm the most hardy and cold-resistant of all palm trees.

This is why it has also adapted perfectly to our climate and is frequently found in the Mediterranean or on the Atlantic coast.

The washingtonia palm has large leaves that can reach 1.80 m in length which end in white-beige filaments, which gives it a very ornamental character.

  • It will withstand temperatures of -10 ° for a short time.

Species and varieties of washingtonias

Washingtonia filifera or California Palm:

  • Superb and majestic palm tree native to California, it can be recognized by its distinctive large fan-shaped leaves.
  • It is a little more rustic than the Robusta because it will withstand temperatures below -10 °
  • Only plant where the climate permits, where winter frosts are rare.

Washingtonia robusta or Mexican Palm:

  • The Washingtonia robusta is less rustic than filifera and fears frost when temperatures approach -5 °.
  • It will therefore thrive in very sheltered and especially very sunny areas where the frost is very rarely below zero degrees.
  • The washingtonia in pots is cultivated in our latitudes, ideal on a terrace or a balcony to enter a place sheltered from frost in winter.

Like the cordyline, it is one of the exotic plants that grow in our climate.

Smart tip

A mulching summer will help it maintain the humidity it needs for its proper development.

Credit: Kerrick

Video: Washingtonia palm tree Autumn Update (October 2020).