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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.
Sowing and Growing
Technical Details
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