 Best Sellers Gray Alder, Mountain Alder, European Speckled Alder, Grey Alder, Hoary Alder Alnus incana - Alnus densiflora, Alnus occidentalis, Betula incana Detailed Listing For Botanical Name: Alnus incana Common Name: Gray Alder, Mountain Alder, European Speckled Alder, Grey Alder, Hoary Alder Average Viable Seeds/Packet: 77 Germination Test Type:  cut Collection Locale: Azerbaijan Minimum Hardiness Zone: 3 In Stock: 1.06 lb Prices Items are priced on a curve, you can buy any 'bulk quantity' up to what we have in stock, some examples are: | | Growing Info, follow in order: Scarification: Soak in water, let stand in water for 24 hours. Soak in water, let stand in water for 24 hours. Soak in water, let stand in water for 24 hours. Soak in water, let stand in water for 24 hours. Soak in water, let stand in water for 24 hours. Stratification: cold stratify for 30 -60days. cold stratify for 90 days. Germination: sow seed 1/4" deep, tamp the soil, mulch the seed bed. sow seed 1/16" deep, tamp the soil, lightly mulch the seed bed. sow seed 1/16" deep, tamp the soil, lightly mulch the seed bed. sow seed 1/8" deep , tamp the soil, mulch the seed bed. Other: an alternate treatment is to bury the seed in snow for 50 days. | In a Nutshell: * A decidious Tree growing to 18m. more... * This is an excellent pioneer species for re-establishing woodlands on disused farmland, difficult sites etc. * This is an excellent pioneer species for re-establishing woodlands on disused farmland, difficult sites etc. Its fast rate of growth means that it quickly provides sheltered conditions to allow more permanent woodland trees to become established. In addition, bacteria on the roots fix atmospheric nitrogen - whilst this enables the tree to grow well in quite poor soils it also makes some of this nitrogen available to other plants growing nearby. * A species of alder with a wide range across the cooler parts of the Northern Hemisphere .
more... * Its fast rate of growth means that it quickly provides sheltered conditions to allow more permanent woodland trees to become established. In addition, bacteria on the roots fix atmospheric nitrogen - whilst this enables the tree to grow well in quite poor soils it also makes some of this nitrogen available to other plants growing nearby. more... * The tree has an extensive root system and can be planted to control banks from erosion. * A low and clump-forming shrub, sometimes a small tree. The Latin subspecies name, meaning rugose or wrinkled, refers to the network of sunken veins prominent on the lower leaf surfaces. more... * Alder trees also have a heavy leaf canopy and when the leaves fall in the autumn they help to build up the humus content of the soil. Alder seedlings do not compete well in shady woodland conditions and so this species gradually dies out as the other trees become established. more... |
Alnus incana ( Grey Alder or Speckled Alder ) is a species of alder with a wide range across the cooler parts of the Northern Hemisphere . Physical Characteristics  Alnus incana is a deciduous Tree growing to 18 m (59ft) by 5 m (16ft) at a fast rate. It is hardy to zone 2. It is in flower from Feb to March. The flowers are monoecious (individual flowers are either male or female, but both sexes can be found on the same plant) and are pollinated by Wind.It can fix Nitrogen. The plant prefers medium (loamy) and heavy (clay) soils and can grow in heavy clay and nutritionally poor soils.The plant prefers acid, neutral and basic (alkaline) soils..It can grow in semi-shade (light woodland) or no shade.It requires dry moist or wet soil.The plant can tolerate maritime exposure. Alnus incana (Grey Alder or Speckled Alder) is a species of alder with a wide range across the cooler parts of the Northern Hemisphere.
It is a small to medium size tree 15-20 m tall with smooth grey bark even in old age, its life span being a maximum of 60-100 years. The leaves are matt green, ovoid, 5-11 cm long and 4-8 cm broad. The flowers are catkins, appearing early in spring before the leaves emerge, the male catkins pendulous and 5-10 cm long, the female catkins 1.5 cm long and one cm broad when mature in late autumn. The seeds are small, 1-2 mm long, and light brown with a narrow encircling wing. The Grey Alder has a shallow root system, and is marked not only by vigorous production of stump suckers, but also by root suckers, especially in the northern parts of its range. The wood resembles that of the black alder, but is somewhat paler and of little value. http://plants.usda.gov/core/profile?symbol=ALINT |
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