Dogwood Growing Guide
Cornus spp.
Red-twig dogwood's brilliant winter colour comes almost entirely from young stems — the brightest red or yellow wood is one to two years old, which is why hard, regular pruning actually improves the winter display instead of hurting it.
Light
Full sun to part shade; best stem colour in full sun
Soil
Moist, well-drained; tolerates wet sites better than most shrubs
Water
Consistent moisture; not drought-tolerant
Hardiness
Zones 2-8 depending on species
Mature size
3-8 ft for shrub types (red/yellow-twig); 15-25 ft for tree types
Growth rate
Fast for shrub types; moderate for tree forms
Dogwood covers a wide range of plants in Canadian gardens, from low, moisture-loving shrubs like red-twig dogwood grown for vivid winter stem colour, to small flowering trees. Both forms share a preference for consistently moist soil, but the shrub types need a very different pruning approach if you want that winter colour show to stay bright year after year.
Planting
- Plant in spring or fall in a site with consistently moist soil — dogwood is one of the few shrubs that tolerates occasionally wet or low-lying sites well
- Choose full sun for the most vivid winter stem colour on red- and yellow-twig types; part shade is tolerated but produces less intense colour
- Space shrub-form dogwoods according to mature spread, typically 5-8 ft, since many types spread by suckering
- Tree-form dogwoods need a site with room for their mature canopy and benefit from some shelter from harsh winter wind
Watering & soil moisture
- Keep soil consistently moist, especially during the first two growing seasons — dogwood is not drought-tolerant and stresses quickly in dry soil
- Mulch around the base to retain moisture and moderate soil temperature
- Established shrub-type dogwoods tolerate periodic wet conditions well, making them a good choice for low spots or rain gardens
- Water deeply during extended dry spells even on established plants, particularly tree forms
Pruning for winter stem colour
- The brightest red or yellow winter stem colour comes from young wood, typically one to two years old — older stems fade to dull brown-grey
- Each spring, remove roughly one-third of the oldest stems at ground level to stimulate vigorous new colourful growth
- For a more dramatic refresh, some gardeners cut the whole shrub back hard (to 6-12 inches) every 2-3 years in early spring — this sacrifices one season's height for a fuller flush of bright young stems afterward
- Prune in late winter or very early spring before new leaves emerge, so you can clearly see stem colour and shape
General care
- Feed lightly in spring with a balanced fertilizer if growth seems weak; established dogwood generally needs little supplemental feeding
- Remove suckers around the base of shrub types if you want to control spread, or leave them for a fuller, naturalized planting
- Tree-form dogwoods benefit from minimal pruning beyond removing dead, damaged, or crossing branches
- Watch soil moisture closely during hot summer stretches, since dogwood shows stress (wilting, leaf scorch) faster than many shrubs
Common problems
- Dull, faded winter stem colour: usually from stems aging past 2 years without renewal pruning — cut back a portion of old stems each spring
- Leaf scorch or wilting in summer: typically inconsistent soil moisture — increase watering and mulch to retain moisture
- Dogwood sawfly (defoliating larvae in summer): hand-pick or treat with insecticidal soap on visible larvae
- Canker or dieback on stressed plants: prune out affected wood promptly and cleanly, and address any underlying moisture stress
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Frequently asked questions
The brightest colour comes from young stems, generally one to two years old. Remove about a third of the oldest stems at ground level each spring to keep stimulating fresh, colourful growth — older, unpruned stems fade to dull brown-grey.
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