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Guide botanique

White Oak.

Quercus alba

Prononciation KWER-kus AL-buh

Aussi appelée Stave Oak, White Oak, eastern white oak

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The white oak is a majestic, long lived hardwood tree native to eastern North America. It is prized for its sturdy wood and beautiful, rounded canopy that provides excellent shade. These trees are a cornerstone of forest ecosystems and support a wide variety of wildlife.

En un coup d'œil

Niveau d'entretien
Facile
Type de plante
Deciduous tree
Lumière
Full sun
Lumière en intérieur
Soleil direct
Arrosage
Tous les 7 à 14 jours
Taille adulte
80 to 100 feet
Croissance
Moyenne
Rusticité
USDA 3 à 9
Floraison
Mid to late spring

Entretien

Plant your white oak in a spot with plenty of space for its expansive root system and canopy to grow. Keep an eye out for leaf spots or signs of pests like oak wilt, which can affect the tree's health. Ensure the soil remains well drained to prevent root issues as the tree matures.

Arrosage
Young trees need regular deep watering during dry spells to establish a strong root system.
Engrais
Apply a slow release fertilizer in early spring if the tree shows signs of slow growth.
Taille
Prune during the dormant winter season to remove dead or crossing branches.
Rempotage
This tree is not suitable for container gardening long term due to its massive size.
Sol
Deep, moist, well drained acidic soil
pH du sol
Acidic to neutral
Température
-35 à 35°C
Humidité
40 à 70%

Sécurité

Humains
The leaves and acorns contain tannins which can cause digestive upset if ingested in large quantities.
Enfants
Acorns are a potential choking hazard for small children if left within reach.
Allergènes de contact
The bark and leaves are generally safe, but some individuals may experience mild irritation from handling.
Allergènes aéroportés
White oak pollen is a significant seasonal allergen that can cause hay fever in sensitive individuals.
Comestibilité
Acorns contain high levels of tannins and require leaching before they can be safely consumed by humans.

Comment l'identifier

  • Rounded lobes on leaves
  • Light gray, scaly bark
  • Acorns with warty caps
  • Large, spreading canopy structure
Hauteur
15 à 30m
Envergure
15 à 25m
Feuilles
green, red, brown, deciduous
Fleurs
yellow, green, 0,5 à 1cm
Fruits
brown, Autumn

Problèmes courants

  • Oak Wilt — A fungal disease that blocks the water conducting vessels of the tree, leading to leaf drop and death.
  • Oak Leaf Blister — A fungal infection causing raised, circular spots on the leaves during cool, wet springs.

La cultiver

Multiplication
seed
Quand planter
Spring, Autumn

Plant white oaks in large open spaces where they can develop their full, majestic canopy without competition.

Bonnes associations

Espèces similaires

  • Quercus macrocarpa — It shares a similar stature but has distinctively fringed acorn caps.
  • Quercus montana — It is another large oak that prefers rocky, well drained ridges.

Science

Famille
Fagaceae
Genre
Quercus
Ordre
Fagales
Classe
Magnoliopsida
Région d'origine
Eastern and central North America.
Préservation
This species is widespread and not currently of conservation concern.

It thrives in diverse soil types and is highly adapted to fire prone ecosystems.

Intérêt pour la faune
larval host plant, food source for mammals, nesting site
Pollinisateurs
abeilles, coléoptères
Utilisations
shade tree, timber production, wildlife habitat, landscape specimen

Au fil des saisons

JFMAMJJASOND
Floraison
Fructification
Feuillage

Repères écologiques

Salinité
1/9
Réaction du sol
5/9
Lumière
7/9
Température
5/9
Humidité
5/9
Nutriments
5/9

Taxonomie vérifiée avec le GBIF.

Ce qu'on demande souvent

How fast does a white oak grow?
It is a slow to moderate grower, typically adding 30 to 60 centimeters per year.
Can I plant a white oak near my house?
No, its massive size and extensive root system make it unsuitable for small yards or close proximity to structures.

D'où vient le nom

The name alba refers to the light, whitish color of the bark, while Quercus is the classical Latin name for oak.

Bon à savoir

  • White oaks can live for several hundred years.
  • The wood is highly prized for furniture and barrel making.
  • The leaves often turn a beautiful wine red in the autumn.
  • It is the state tree of Illinois, Connecticut, and Maryland.

Ta plante a mauvaise mine ?

Cette page est un guide général. Pocket Botanist diagnostique les problèmes directement à partir d'une photo de ta plante, adapte l'arrosage à sa luminosité et te prévient quand il faut t'en occuper.

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Ce guide a été généré par IA et vérifié avec la taxonomie du GBIF. Il s'agit d'informations générales, et non de conseils horticoles ou vétérinaires. Découvre comment nous concevons ces guides.