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Pseudotsuga menziesii

TAXONOMIE

FamillePinaceae

GenrePseudotsuga

Zone4

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Pseudotsuga menziesii, commonly known as Douglas fir, is a species of evergreen conifer native to western North America. It is a large tree, reaching heights of up to 100 meters in its native habitat. The tree is known for its distinctive cones and soft, flat needles. It prefers temperate climates and is commonly found in mountainous regions.

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Douglas Fir

Abies californica

Abies douglasii var. fastigiata

Abies douglasii var. pendula

Abies douglasii var. taxifolia

Abies menziesii

Abies taxifolia

Abies taxifolia var. pendula

Abietia douglasii var. fastigiata

Abietia douglasii var. pendula

Pinus douglasii var. brevibracteata

Pinus douglasii var. pendula

Pinus douglasii var. taxifolia

Pinus taxifolia

Pseudotsuga douglasii f. compacta

Pseudotsuga douglasii f. globosa

Pseudotsuga douglasii f. pendula

Pseudotsuga douglasii var. laeta

Pseudotsuga douglasii var. viminalis

Pseudotsuga mucronata

Pseudotsuga mucronata var. elongata

Pseudotsuga mucronata var. palustris

Pseudotsuga taxifolia f. compacta

Pseudotsuga taxifolia f. fastigiata

Pseudotsuga taxifolia f. globosa

Pseudotsuga taxifolia f. pendula

Pseudotsuga taxifolia subsp. mucronata

Pseudotsuga taxifolia subsp. viridis

Pseudotsuga taxifolia var. brevibracteata

Pseudotsuga taxifolia var. pendula

Pseudotsuga taxifolia var. viminalis

Pseudotsuga taxifolia var. viridis

Tsuga douglasii var. fastigiata

Tsuga douglasii var. pendula

APERÇU

VPDCalculer

EauSec

SolLimoneux

LumièreLumière directe (6 Heures)

Température15° C

Humidité60

Dormance3 Mois

pH5,5

Pression1 013

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Demander

DÉTAILS

Instructions d'entretien

Douglas firs require bright, direct sunlight and moderate temperatures to thrive. They prefer environments with moderate humidity and should be watered when the soil is almost completely dry. These trees are best suited for outdoor growth in temperate climates.

Sol

Douglas firs prefer well-draining loamy soil that is slightly acidic. The soil should be kept moderately moist but not waterlogged. Good drainage is essential to prevent root rot.

Engrais

Douglas firs generally do not require additional fertilization if planted in nutrient-rich soil. If necessary, a balanced, slow-release fertilizer can be applied in early spring.

Rempotage

Douglas firs are not typically repotted as they are large trees meant for outdoor planting. If grown in a container during the early stages, they should be transplanted to their permanent outdoor location as soon as they outgrow the container.

Propagation

Douglas firs can be propagated from seeds. Collect seeds from mature cones in the fall, stratify them by storing in a cold, moist environment for several weeks, and then plant them in well-draining soil. Seedlings should be transplanted outdoors once they are strong enough.

Taille

Pruning is necessary to maintain the shape and health of the Douglas fir. Prune dead or diseased branches in late winter or early spring before new growth begins. Avoid heavy pruning as it can stress the tree.

Toxicité

Douglas firs are not toxic to pets or humans. However, the needles and sap can cause minor skin irritation in some individuals.

Supplémentaire

Douglas firs are highly valued for their timber and are commonly used as Christmas trees. They are also important for wildlife, providing habitat and food for various species.

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