Dogwood
Cornus sanguinea
At a Glance
| Botanical name | Cornus sanguinea |
|---|---|
| Common name(s) | Dogwood |
| Family | Cornaceae |
| Plant type | shrub |
| Height × Spread | 200–600 cm × — |
| Hardiness | H6 (to -20.0 °C) |
| Position | Full sun, Partial shade |
| Soil | Moist but well-drained; light, often alkaline soils |
| Flowering | — |
| Toxicity | — |
| Native range | most of Europe and western Asia |
Dogwood (Cornus sanguinea) is a vigorous, deciduous native shrub prized in British gardens for its fiery winter stems, clusters of late-spring flowers, and value to wildlife. Found wild in hedgerows and woodland edges across England, Wales, Ireland and parts of Scotland, it is one of the most reliable and undemanding shrubs for seasonal interest. The cultivar name sanguinea — meaning "blood-red" — refers to the vivid young shoots that glow from late autumn through to early spring, when most of the garden is otherwise bare.
Overview
Dogwood is a dense, multi-stemmed shrub that suckers freely to form thickets. In the wild it is a familiar component of mixed hedgerows on neutral and calcareous soils, particularly in southern and central England. Gardeners value it for three reasons: its bright red winter stems, its tolerance of a wide range of soils and situations, and its usefulness as a wildlife plant. The flowers feed bees and hoverflies in early summer, and the blue-black autumn berries are taken readily by blackbirds, song thrushes and fieldfares.
In larger gardens it is grown as a specimen for winter stem colour, often planted in groups of three to five for maximum impact. In smaller gardens it can be kept compact by annual coppicing, and it makes a useful component of a mixed native hedge where its foliage contributes to the dense, layered structure typical of traditional English boundaries.
Appearance
A mature dogwood forms a rounded, suckering thicket of upright to slightly arching stems, typically reaching 1.5–3 m in height with a similar spread. The youngest growth is the most colourful: smooth, glossy and deep red to purplish-red, especially on the side facing the sun. As the stems age they turn duller, becoming grey-brown by their second or third winter, which is why the brightest display comes from a regular cycle of renewal pruning.
The leaves are arranged in opposite pairs along the stem. They are oval to elliptical, 4–8 cm long, with smooth, untoothed margins, a pointed tip and short stalks. Upper surfaces are a fresh mid-green with a slightly paler underside; both surfaces carry fine, appressed hairs when young. In autumn the foliage turns reliably to deep red and plum-purple, often with a brief but striking show before leaf fall.
Flowers appear in late May or early June, after the leaves have fully expanded. They are small (around 5–10 mm across), creamy-white, with four narrow petals, and are carried in flat-topped clusters (umbels) up to 5 cm across. The flowers are followed by small, hard, round fruits about 5–8 mm in diameter that ripen from green through reddish to blue-black in September and October. Botanically these are drupes, not true berries, each containing a single hard stone.
Growing Conditions
Dogwood is one of the easiest native shrubs to site. It grows well in full sun or partial shade, though the brightest stem colour develops in open, sunny positions where the young shoots are exposed to winter light. Light dappled shade is also acceptable and is, in fact, the situation it occupies naturally at woodland edges.
Soil requirements are modest. The plant prefers a moist but well-drained loam but tolerates clay, sandy and slightly chalky soils provided they do not dry out completely in summer. It accepts a pH range from mildly acidic (around 5.5) through to neutral and slightly alkaline (up to about 7.5). Established plants withstand short periods of drought, although prolonged dry spells can lead to leaf scorch and reduced flowering the following year.
It is fully hardy throughout the UK, withstanding the cold winters of upland Scotland, northern England and the Midlands. It is also tolerant of exposed and coastal positions, although leaves may be slightly battered by persistent salt-laden winds. The Royal Horticultural Society classifies it within hardiness ratings H6 to H7, meaning it tolerates minimum temperatures between -15 °C and -20 °C without damage.
Planting and Care
Bare-root plants establish best and are best planted between October and March, when the soil is workable and the plants are dormant. Container-grown stock can be planted at any time of year, provided the ground is neither frozen nor waterlogged, with attention to regular watering through the first growing season. Space plants 1.5 m apart for a hedge or screen, or 2.5–3 m apart as specimens where their natural rounded shape can develop.
Watering is important during the first two summers after planting. Soak thoroughly once a week rather than sprinkling lightly, and apply a generous mulch of well-rotted compost or bark in spring to conserve moisture and suppress weeds. Once established, dogwood needs little supplementary watering except in extended drought.
Feeding is rarely necessary on reasonably fertile garden soil. An annual spring mulch of garden compost is usually sufficient. On very poor sandy soils, a balanced slow-release shrub fertiliser applied in March will encourage stronger growth and brighter stem colour.
Pruning is the key to maintaining a colourful display. For maximum winter stem effect, coppice one-third to one-half of the oldest stems back to within 5–10 cm of the ground in late February or early March, before the new buds break. This encourages vigorous replacement shoots that will colour brilliantly the following winter. Leaving some older stems uncut each year allows the plant to flower and fruit for wildlife. Plants grown purely for foliage and flowers can be left largely untouched, with occasional removal of damaged or crossing stems in late winter.
Propagation is straightforward. Take hardwood cuttings 20–30 cm long from healthy, straight stems between November and February, insert them to two-thirds their depth in a sheltered nursery bed or deep pot of gritty compost, and leave them in place until the following autumn, when most will have rooted. Suckers can also be detached in autumn with a sharp spade and replanted immediately.
Seasonal care is minimal. Cut back hard in late winter for stem colour; mulch in spring; water in drought; and remove any damaged or dead wood after flowering. Container-grown plants should be moved to a sheltered spot in winter and the compost kept just moist.
Common Problems
Dogwood is generally healthy and largely trouble-free in British gardens. The most common issues are minor and easily managed.
Powdery mildew can affect foliage in hot, dry summers, leaving a white dusty coating on the leaves. Improve air circulation by thinning congested stems, water during prolonged dry spells, and clear up affected leaves in autumn. Severe cases can be treated with a sulphur-based fungicide, though this is rarely necessary.
Aphids occasionally colonise the soft new growth in late spring, causing slight leaf distortion. They are usually kept in check by natural predators such as ladybirds and hoverflies and rarely require intervention. A strong jet of water will dislodge heavy infestations.
Coral spot fungus (Nectria cinnabarina) can enter through pruning wounds or damaged stems, causing small pinkish-orange pustules and die-back. Cut affected stems back to healthy wood and dispose of the prunings rather than composting them.
Honey fungus (Armillaria spp.) may attack stressed or older plants, particularly on sites with buried woody debris. There is no chemical control; affected plants should be lifted and the ground rested or cultivated before replanting.
Leaf scorch appears as browning around the leaf margins during hot, dry or windy weather. It is a physiological response, not a disease, and is best prevented by mulching and watering during dry periods.
Dogwood is not regarded as toxic to humans or pets, although the berries have a bitter, unpalatable taste and are not eaten by people. Birds, by contrast, consume them in quantity once ripe.
Popular Varieties
Several named cultivars of Cornus sanguinea have been selected for particularly vivid or unusual winter stem colour. They share the same basic cultural needs as the species and make excellent alternatives in smaller gardens where the species itself can become too vigorous.
'Midwinter Fire' is one of the most widely planted cultivars, prized for its glowing stems that graduate from yellow at the base through orange to bright coral-red at the tips. It tends to be more compact than the species, typically reaching 1.5–2 m, and is the form most often recommended for smaller gardens.
'Anny's Winter Orange' (sometimes sold as 'Anny') has bright orange-red stems, with the warmest colour developing on younger growth. It grows to roughly 2 m tall and is valued for the particularly intense tone of its midwinter display.
'Winter Beauty' carries stems that are predominantly yellow at the base flushing to red at the tips, giving a two-tone effect that reads well against dark evergreens or a plain background. It is a slightly more compact form, generally reaching 1.5–2 m.
'Magic Flame' is a newer selection with vivid orange-red stems and a tidy, upright habit to around 2 m. Its bright colour has made it a popular alternative to 'Midwinter Fire' in recent plantings.
Gardeners should be aware that plants sold as "red-barked dogwood" may also include forms of the closely related Cornus alba (such as 'Sibirica' and 'Elegantissima'); these are excellent shrubs in their own right but belong to a different, more vigorous species native to Siberia and northern China, and they may need more hard pruning to keep them within bounds.
Pests and Diseases
| Problem | Symptoms | Management |
|---|---|---|
| Honey fungus | Wilting, dieback of branches, and white fungal growth under the bark. | Improve drainage and avoid planting in soil previously infected with honey fungus. |
| Phytophthora root rot | General decline, yellowing leaves, and eventual death due to waterlogged roots. | Ensure well-drained soil and avoid overwatering to prevent root suffocation. |
| Horse chestnut scale | Small, white or brown waxy scales on stems causing yellowing leaves and sooty mould. | Scrape off visible scales in winter and encourage natural predators like ladybirds. |
| Vine weevil | Notched leaf margins and root damage by grubs in the soil or compost. | Check pots for grubs before planting and use biological controls if infested. |
| Slugs and snails | Irregular holes chewed into young leaves and seedlings, often with slime trails. | Use physical barriers like copper tape or beer traps to protect new growth. |
Quick Care Summary
| Sunlight | Full sun, Partial shade |
|---|---|
| Soil | Moist but well-drained; light, often alkaline soils |
| Hardiness | H6 (-20.0 °C) |
| Sow | — |
| Plant | January–December |
| Prune | March–May |
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