Coast live oak.

En un coup d'œil

Niveau d'entretien

Facile

Type de plante

Tree

Lumière

Full sun

Lumière en intérieur

Soleil direct

Arrosage

Tous les 14 à 30 jours

Taille adulte

20 to 80 feet

Croissance

Moyenne

Rusticité

USDA 8 à 10

Floraison

Early to mid spring

Entretien

Plant this tree in a spot with plenty of space for its wide root system. Avoid overwatering once established, as summer water can lead to root rot. Watch for signs of sudden oak death or leaf spots to keep it healthy.

Arrosage

Young trees need regular water, but mature trees prefer to stay dry during the summer.

Engrais

Generally does not need fertilizer if planted in native soil.

Taille

Prune only to remove dead or crossing branches during the dormant winter season.

Rempotage

These are best planted directly in the ground as they develop deep taproots.

Sol

Well draining loam or clay

pH du sol

6.0 to 7.5

Température

-7 à 38°C

Humidité

20 à 60%

Résistance à la sécheresse

Élevée

Durée de vie

Perennial, typically 100 to 250 years.

Résistance aux chevreuils et lapins

Moyenne

Sécurité

Humains

The plant is not considered toxic, but the high tannin content in raw acorns can cause digestive upset.

Enfants

The sharp, prickly leaf margins can scratch young children, so it is best planted away from play areas.

Allergènes de contact

The stiff, holly like leaves can cause minor skin scratches if handled without gloves.

Allergènes aéroportés

The windborne pollen produced in spring is a common cause of seasonal allergies.

Comestibilité

Acorns contain high levels of tannins and require extensive leaching before they are safe for human consumption.

Comment l'identifier

• Evergreen leaves with spiny margins
• Dark gray and furrowed bark
• Rounded and dense canopy shape
• Small acorns with cap scales
• Leaves are cupped or convex

Hauteur

6 à 25m

Envergure

5 à 30m

Feuilles

dark green, evergreen

Fleurs

yellow, green, 0,5 à 1cm

Fruits

brown, Autumn

Problèmes courants

• Sudden Oak Death — A lethal pathogen that causes cankers and dieback in coastal oak populations.
• Oak Moth — Caterpillars can occasionally defoliate large portions of the canopy.

La cultiver

Multiplication

seed

Quand planter

autumn, winter

Hivernage

No special care is needed as it is fully adapted to its native climate. Keep the area around the trunk clear of mulch to prevent moisture buildup.

En pot

It is not suitable for long term container growth due to its massive size and deep taproot requirements.

Avoid planting thirsty garden perennials directly under the drip line to prevent crown rot.

Bonnes associations

• Artemisia californica — They share similar drought requirements and thrive in the same coastal scrub habitat.
• Toyon — This shrub provides a beautiful evergreen understory that complements the oak.
• Frangula californica — It is a reliable companion that tolerates the dry shade beneath the oak canopy.

Espèces similaires

• Quercus wislizeni — It is very similar but better adapted to hotter, inland climates.
• Quercus chrysolepis — It has a similar evergreen habit but prefers cooler, mountainous regions.

Science

Famille

Fagaceae

Genre

Quercus

Ordre

Fagales

Classe

Magnoliopsida

Région d'origine

Coastal California and northern Baja California.

Préservation

It is not currently endangered, but it faces significant threats from sudden oak death syndrome and habitat loss.

It survives in Mediterranean climates by utilizing deep taproots to access groundwater during long, rainless summers.

Intérêt pour la faune

larval host plant, provides nesting cover, acorns feed mammals and birds

Pollinisateurs

abeilles, papillons, papillons de nuit

Utilisations

shade tree, wildlife garden, erosion control, coastal windbreak

Taxonomie vérifiée avec le GBIF.

Ce qu'on demande souvent

Does it need summer water?

Established trees prefer dry summers and may suffer from root rot if irrigated during the hot months.

How fast does it grow?

It is a moderate grower, typically adding 30 to 60 centimeters of height per year.

D'où vient le nom

The species name agrifolia means field leaf, referring to the resemblance of its leaves to those of the European holly.

Bon à savoir

• The coast live oak is the only California native oak that thrives in coastal environments.
• These trees can live for over 250 years in the right conditions.
• The wood is extremely hard and was historically used for making charcoal.
• They are well adapted to survive wildfires by resprouting from the root crown.

Aussi dans

• Plantes résistantes à la sécheresse