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Alnus incana
Alnus incana
Alnus incana
Alnus incana

Alnus incana

TAXONOMY

FamilyBetulaceae
GenusAlnus
Zone3

ABOUT

Alnus incana, commonly known as grey alder or speckled alder, is a deciduous tree native to temperate regions of the Northern Hemisphere. It is part of the Betulaceae family and the Alnus genus. This tree is known for its ability to fix nitrogen in the soil, making it beneficial for improving soil fertility. It typically grows in moist, well-drained soils and can be found along riverbanks and in wetlands. The tree has a dormancy period during the winter months.

ALSO KNOWN AS

Grey Alder
Alnus glutinosa var. incana
Alnus incana f. acuminata
Alnus incana f. acutiloba
Alnus incana f. argyrophylla
Alnus incana f. blyttiana
Alnus incana f. brachyphylla
Alnus incana f. cordifolia
Alnus incana f. crataegifolia
Alnus incana f. dubia
Alnus incana f. flavescens
Alnus incana f. microcarpa
Alnus incana f. microconus
Alnus incana f. microphylla
Alnus incana f. monstrosa
Alnus incana f. oxyloba
Alnus incana f. pallida
Alnus incana f. pendula
Alnus incana f. pinnata
Alnus incana f. pinnatisecta
Alnus incana f. subargentata
Alnus incana f. subcordata
Alnus incana f. subcordifolia
Alnus incana f. subsericea
Alnus incana var. acuminata
Alnus incana var. alpestris
Alnus incana var. angulata
Alnus incana var. arcuata
Alnus incana var. argentea
Alnus incana var. bipinnatifida
Alnus incana var. borealis
Alnus incana var. bornmuelleri
Alnus incana var. confusa
Alnus incana var. glabra
Alnus incana var. glaucophylla
Alnus incana var. hypochlora
Alnus incana var. intermedia
Alnus incana var. leptophylla
Alnus incana var. microconus
Alnus incana var. microjula
Alnus incana var. oblongifrons
Alnus incana var. obtusifolia
Alnus incana var. orbicularis
Alnus incana var. ovalifolia
Alnus incana var. ovalis
Alnus incana var. ovata
Alnus incana var. parvifolia
Alnus incana var. pendula
Alnus incana var. pinnata
Alnus incana var. pinnatifida
Alnus incana var. pseudospuria
Alnus incana var. sericea
Alnus incana var. subrotunda
Alnus incana var. tomentosa
Alnus languinosa
Betula alnus var. incana
Betula incana
Betula incana var. angulata
Betula incana var. minor

OVERVIEW

WaterWet
SoilLoamy
LightDirect Bright (6 Hours)
Temperature15° C
Humidity60%
Dormancy4 Months
pH6.5
Pressure1,013 mbar

DETAILS

Care Instructions
To care for Alnus incana, provide it with bright, direct sunlight and ensure it receives adequate water to keep the soil evenly moist. It thrives in moderate temperatures and prefers a humid environment. Regular pruning is necessary to maintain its shape and health.
Soil
Alnus incana prefers loamy soil that is well-draining yet retains moisture. It can tolerate a range of soil pH levels but thrives best in slightly acidic to neutral soils. Ensure the soil is rich in organic matter to support its growth.
Fertilizer
This tree generally does not require additional fertilization due to its ability to fix nitrogen in the soil. However, if the soil is particularly poor, a balanced fertilizer can be applied sparingly.
Repotting
As a tree, Alnus incana is not typically repotted. Instead, it should be planted in a suitable outdoor location where it has ample space to grow and develop its root system.
Propagation
Alnus incana can be propagated through seeds or cuttings. Seeds should be sown in the fall, while cuttings can be taken in late spring or early summer. Ensure the cuttings are kept in a moist environment until they establish roots.
Pruning
Pruning is essential for Alnus incana to remove dead or diseased branches and to maintain its shape. Prune during the dormant season in late winter or early spring before new growth begins.
Toxicity
Alnus incana is not known to be toxic to pets or humans. However, as with any plant, it is advisable to prevent pets and children from ingesting any part of the tree.
Additional
Alnus incana is a valuable tree for ecological restoration projects due to its nitrogen-fixing ability and its role in stabilizing soil and preventing erosion. It also provides habitat and food for various wildlife species.
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How To Grow Alnus incana | EarthOne