Cornus circinata L'Hér.
Cornus tomentosa Steud.
Cornus tomentosula DC.
Cornus tomentulosa Michx.
Cornus verrucosa G.Nicholson
Cornus virginiana Lam.
Swida rugosa (Lam.) Rydb.
Thelycrania rugosa (Lam.) Pojark.
Common Name: Round-Leaved Dogwood
Cornus rugosa is a deciduous shrub that can grow up to 3 metres tall from a rhizomatous rootstock. It produces solitary, erect stems at intervals of 50 - 100cm[
The plant is sometimes harvested from the wild for local use as a medicine. It is grown as an ornamental in gardens.
Eastern N. America - Manitoba to Nova Scotia and New Brunswick, south to Iowa, Tennessee and Virginia
Wooded slopes, forests, stream banks, lake shores; at elevations up to 2,000 metres[
]. Dry woods and rocky slopes[
|Cultivation Status||Ornamental, Wild
Cornus rugosa is a very cold-hardy tree, tolerating temperatures down to around -25°c when dormant.
Succeeds in full sun or light shade[[
]. An easily grown plant, it succeeds in any soil of good or moderate fertility[
], ranging from acid to shallow chalk[
]. Grows well in heavy clay soils. Succeeds in poorly drained soils[
Plants commence flowering when about 100cm tall[
A very ornamental[
] and free-flowering plant[
Plants in this genus are notably resistant to honey fungus[
The pale blue, globose fruit is 5 - 8mm in diamater, the thin layer of flesh enclosing a single, large seed[
]. We have seen no reports of this fruit being edible.
The bark is cathartic, febrifuge and tonic[
A decoction of the roots has been used in the treatment of kidney complaints and TB[
The plant (part not specified) is used in homeopathy to treat conditions such as chronic malaria, hepatitis, jaundice; weakness in morning; pain in pit of stomach, with distended abdomen; vesicular eruption associated with chronic liver disease or aphthous stomatitis[
Seed - best sown as soon as it is ripe in a cold frame or in an outdoors seedbed if there is sufficient seed[
]. The seed must be separated from the fruit flesh since this contains germination inhibitors[
]. Stored seed should be cold stratified for 3 - 4 months and sown as early as possible in the year[
]. Scarification may also help as may a period of warm stratification before the cold stratification[
]. Germination, especially of stored seed, can be very slow, taking 18 months or more[
]. Prick out the seedlings of cold-frame sown seeds into individual pots as soon as they are large enough to handle and grow the plants on for their first winter in a greenhouse, planting out in the spring after the last expected frosts.
Cuttings of half-ripe side shoots, mid summer in a frame.
Cuttings of mature wood of the current year's growth, taken with a heel if possible, autumn in a cold frame. High percentage[
Layering of new growth in early summer/July. Takes 9 months[