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Fraxinus quadrangulata
Fraxinus quadrangulata
Fraxinus quadrangulata
Fraxinus quadrangulata

Fraxinus quadrangulata

TAXONOMY

FamilyOleaceae
GenusFraxinus
Zone4

ABOUT

Fraxinus quadrangulata, commonly known as Blue Ash, is a species of ash tree native to the central and eastern United States. It is known for its distinctive square-shaped twigs and its ability to thrive in temperate climates. The tree can grow up to 25 meters tall and has a broad, rounded crown. It undergoes a dormancy period during the winter months.

ALSO KNOWN AS

Blue Ash
Calycomelia quadrangulata
Fraxinus americana var. quadrangulata
Fraxinus quadrangularis
Fraxinus quadrangulata var. subpubescens
Fraxinus tetragona
Leptalix quadrangulata

OVERVIEW

WaterDry
SoilLoamy
LightDirect Bright (6 Hours)
Temperature20° C
Humidity50%
Dormancy4 Months
pH6.5
Pressure1,013 mbar

DETAILS

Care Instructions
Blue Ash trees prefer full sunlight and moderate temperatures. They require well-drained soil and should be watered when the soil is almost completely dry. These trees are relatively hardy and can tolerate a range of humidity levels. Regular pruning is necessary to maintain their shape and health.
Soil
Blue Ash trees thrive in well-drained loam soil. The soil should be slightly acidic to neutral in pH. Good drainage is essential to prevent root rot, so ensure the planting site does not retain water.
Fertilizer
Blue Ash trees generally do not require additional fertilization if planted in nutrient-rich soil. If necessary, a balanced fertilizer can be applied in early spring to support growth.
Repotting
As Blue Ash is a large tree, it is not typically repotted. Instead, ensure it is planted in a suitable location where it has ample space to grow and develop.
Propagation
Blue Ash can be propagated through seeds or cuttings. Seeds should be collected in the fall and stratified over winter before planting in the spring. Cuttings can be taken in late spring or early summer and rooted in a well-draining medium.
Pruning
Pruning is essential for Blue Ash trees to remove dead or diseased branches and to maintain a strong structure. Prune during the dormant season, typically in late winter, to avoid sap loss and to promote healthy growth.
Toxicity
Blue Ash is not known to be toxic to pets or humans. However, as with all plants, it is advisable to prevent pets and children from ingesting any part of the tree.
Additional
Blue Ash is valued for its hard, durable wood, which is used in furniture and tool handles. It is also a host plant for various species of butterflies and moths, making it an excellent choice for wildlife gardens.
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