How to Grow Dogwood (Flowering)
Cornus florida
Flowering dogwoods (Cornus florida and C. kousa) are elegant small to medium trees prized for their spectacular spring bracts, autumn colour, and attractive horizontal branching. Plant in sheltered, partially shaded positions in moist, well-drained, slightly acidic soil enriched with organic matter. They dislike exposed windy sites and waterlogged ground. Mulch annually with leaf mould or composted bark to keep roots cool and soil acidic. Prune minimally in late autumn to early winter, only to remove dead or crossing branches. C. kousa is more disease-resistant and flowers slightly later than C. florida.
Yearly Lifecycle
Care Essentials
Apply a balanced slow-release fertiliser in early spring before bud break. Mulch with composted bark or leaf mould to maintain acidic to neutral soil conditions.
Watch For
- Dogwood anthracnose
- Powdery mildew
- Dogwood borer
- Scale insects
Companions
Azaleas, Rhododendrons, Ferns, Hostas
Care Requirements
Light
Partial shade to full sun
Prefers dappled shade or morning sun with afternoon shade. Full sun is tolerated in cooler climates if soil stays moist. Avoid hot, exposed south-facing positions in warm regions.
Watering
Regular moisture; do not let roots dry out
Water deeply during dry spells, especially in the first 3 years after planting. Dogwoods have shallow root systems that suffer quickly in drought. Mulch heavily to conserve moisture.
Fertilizing
Balanced feed in early spring
Apply a slow-release balanced fertiliser in early spring before bud break. Avoid high-nitrogen feeds that promote soft growth. Annual mulching with leaf mould provides gentle ongoing nutrition.
Pruning
Minimal; late autumn to early winter only
Prune only to remove dead, damaged, or crossing branches during full dormancy. Dogwoods bleed sap if pruned in spring. The natural layered form needs almost no shaping.
Spacing
5-7 m apart for specimen planting
Allow 5-7 m between trees for full canopy development. C. kousa is slightly more compact than C. florida. Both develop a wide-spreading horizontal branching habit at maturity.
Support
Stake young trees for first 2 years
Use a low stake and soft tie for newly planted trees to allow the trunk to flex and strengthen. Remove stakes after 2 years once the root system is established.
Growing Tips
Choose the right species
C. florida flowers earlier with pink or white bracts but is susceptible to anthracnose. C. kousa flowers later, has better disease resistance, and produces strawberry-like fruits. Choose based on your climate and disease pressure.
Acidic soil matters
Dogwoods thrive in slightly acidic soil (pH 5.5-6.5). Mulch with leaf mould, pine needles, or composted bark to maintain acidity. Avoid chalky or alkaline conditions which cause chlorosis.
Protect from afternoon sun
In hot climates, site where the tree gets morning sun and afternoon shade. Full sun is fine in cooler northern regions. Leaf scorch occurs when roots dry out in exposed positions.
Minimal pruning only
Flowering dogwoods have a naturally graceful form. Prune only to remove dead, damaged, or rubbing branches. Heavy pruning destroys the elegant layered habit.
