White Spruce.

En un coup d'œil

Niveau d'entretien

Facile

Type de plante

Coniferous evergreen tree

Lumière

Full sun

Lumière en intérieur

Soleil direct

Arrosage

Tous les 7 à 14 jours

Taille adulte

60 to 100 feet

Croissance

Moyenne

Rusticité

USDA 2 à 6

Floraison

Late spring

Entretien

Plant this tree in a spot that receives full sun and has well draining soil. Keep an eye out for needle drop or yellowing, which can indicate moisture stress or pests. It is quite self sufficient once established in the landscape.

Arrosage

Water deeply during dry spells to keep the root zone consistently moist.

Engrais

Apply a balanced fertilizer once in early spring before new growth begins.

Taille

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

Rempotage

If kept in a container, move to a larger pot every few years as the root system expands.

Sol

Moist, well drained, acidic soil

pH du sol

5.0 to 7.5

Température

-45 à 30°C

Humidité

40 à 70%

Sécurité

Humains

This plant is not considered toxic to humans.

Enfants

The sharp needles pose a minor poking hazard to small children.

Allergènes de contact

Handling the needles may cause minor skin irritation due to their sharp tips.

Allergènes aéroportés

The pollen can be a mild respiratory irritant for sensitive individuals during the spring.

Comestibilité

The needles are generally safe for tea, but avoid ingestion if you are unsure of the specific cultivar or if it has been treated with chemicals.

Comment l'identifier

• Conical shape with dense branching
• Short, stiff, blue green needles
• Light brown, papery, cylindrical cones
• Fragrant needles when crushed
• Scaly, grayish brown bark

Hauteur

12 à 24m

Envergure

3 à 6m

Feuilles

blue-green, green, evergreen

Fleurs

red, yellow, 1 à 2cm

Fruits

brown, Autumn

Problèmes courants

• Spruce budworm — Larvae feed on new needles, causing defoliation and stunted growth.
• Needle cast — Fungal infection causing needles to yellow and drop prematurely.

La cultiver

Multiplication

seed, cuttings

Quand planter

spring, autumn

Plant in groups to create a natural windbreak that protects smaller shrubs from harsh winter gusts.

Bonnes associations

• Betula papyrifera — They naturally occur together in northern forests and provide a beautiful color contrast.
• Quaking Aspen — These trees share similar environmental needs and create a classic boreal landscape.

Espèces similaires

• Picea mariana — It is a closely related species that prefers wetter, boggy soils.
• Picea pungens — It has a similar conical shape but features more intense blue foliage.

Science

Famille

Pinaceae

Genre

Picea

Ordre

Pinales

Classe

Pinopsida

Région d'origine

Northern North America, from Alaska to the Atlantic coast.

Préservation

This species is widespread and not currently of conservation concern.

It thrives in diverse soil types and is a pioneer species that often colonizes burnt or disturbed forest areas.

Intérêt pour la faune

nesting site, winter shelter, seed source

Pollinisateurs

abeilles

Utilisations

ornamental specimen, windbreak, timber, reforestation

Taxonomie vérifiée avec le GBIF.

Ce qu'on demande souvent

How fast does it grow?

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

Does it need pruning?

Little pruning is required, but you can remove dead or damaged branches in late winter.

D'où vient le nom

The name Picea is derived from the Latin word for pitch, while glauca refers to the blue-green, glaucous color of the needles.

Bon à savoir

• It is often called the skunk spruce because crushed needles emit a pungent odor.
• White spruce can live for over 200 years in ideal conditions.
• It is highly tolerant of cold climates and poor soil conditions.