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Seeds - Alternate-leaved Dogwood

Cornus alternifolia

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Regular price $4.50
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Origine : Non spécifiée


Catégories: arbuste, indigène, nectarifère, nouveauté, résiste aux cerfs, vivace,

Aire de répartition indigène: MB, ON, QC, NB, NS, PE, NL,

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For successful seedlings,
see the growing notes at the bottom of the page!

Alternate-leaved dogwood (Cornus alternifolia) is a large shrub or small tree in the dogwood family, generally reaching 4 to 6 m in height. It is distinguished by its layered form: its branches spread horizontally, forming superimposed tiers that give it an elegant appearance. The simple, oval leaves have arched veins and are arranged alternately, unlike most other dogwoods. They turn beautiful golden yellow shades in the fall.


In spring, around late May or early June, the plant produces broad, flat corymbs of small, creamy white, fragrant, and nectar-bearing flowers. These flowers are followed in late summer by clusters of dark blue, almost black berries, borne on reddish stalks that create an ornamental contrast. The bark, greyish brown, becomes slightly ridged with age.

Alternate-leaved dogwood grows in open forests, edges, ravines, and shores, preferring moist to fresh soils, rich in organic matter and well-drained. It tolerates partial shade and full sun, but flowering is more abundant in sunny locations. In Quebec, it is found in the southern and central parts of the province, where it plays an important ornamental and ecological role.

Ecological roles
Alternate-leaved dogwood provides nectar and pollen to many pollinators, including bees, hoverflies, and butterflies, in early summer. Its fruits are an important food source for several bird species, such as robins, thrushes, and waxwings, which contribute to seed dispersal. The plant also serves as shelter for small wildlife and stabilizes soils along streams or on gentle slopes. 

 

Alternate-leaved dogwood seeds require scarification and cold stratification to ensure germination. See the cultivation notes below for more details.

Akène cannot assume any responsibility for the use of plants for therapeutic purposes. Always seek advice from a professional before using a medicinal or edible plant.

Growing Notes | Seeds - Alternate-leaved Dogwood

Alternate-leaved dogwood prefers rich, fresh to moist, well-drained soils, and tolerates both full sun and partial shade. It adapts to various soil types, but flowering is more abundant in fertile, moist soil.

Alternate-leaved dogwood seeds require scarification by soaking, followed by a 90-day warm stratification period, then a 90-day cold and moist stratification period.

Stratification: Soak the seeds for 24 hours in room-temperature water.
Stratification: Then, place them in a sealed bag with a moist substrate (such as vermiculite) and keep them at room temperature for 90 days. After this period, transfer the bag to the refrigerator for 90 days. This step can also be carried out naturally by an outdoor fall sowing.

Sow the seeds about 5 mm deep in a well-drained substrate. Germination is irregular and may take several months; this species is known for its difficult germination.

Seeds per packet: 10

Family: Cornaceae

Scientific name: Cornus alternifolia

Life cycle: Perennial

Hardiness zone: 3b

Soil type:
Sandy to clayey, humusy

Soil moisture level: Humid

Soil - additional attributes: Well-drained, rich

Light: Sun, part shade

Blooming: May to June

Spacing: 300 to 400 cm

Height: 300 to 600 cm

Deer resistance: High

Stratification: 90 days

Scarification: Soaking for 24 hours

Germination time: Irregular, may take several months

Sowing depth: Less than 5 mm