Giant dogwood
Cornus controversa · Cornaceae
📷 Daderot · Public domain
The gardener's calendar
In autumn, ease off feeding and take the chance to clean up around giant dogwood and prepare for winter.
ID card
- Foliage
- Deciduous
- Flowering
- May to June, white flowers in umbels
- Adult size
- 8 m tall, spreading and tiered habit
- Growth rate
- Moderate
- Hardiness
- Hardy (-15 to -20 °C)
- Origin
- Japan, China, Taiwan
- Soil type
- Rich, well-drained, slightly acidic to neutral
✓ Taxonomy verifiedSource: AI estimate · hardiness: reliability high.
Expert tips
The key tip
This giant dogwood demands patience: slow growth in the early years, then rapid. Install good mulch for moisture and aerate the soil without compacting it.
The common mistake
Getting impatient and replanting too soon: give it 3-4 years before judging its vigor.
The pro's trick
Mulch generously (minimum 1 m radius) with coarse compost: this speeds up establishment by 2-3 years.
Care
Sunlight exposure
Your dogwood thrives in partial shade or full sun, ideally sheltered from strong winds. In warm climates, partial shade helps maintain healthy foliage. Abundant indirect light promotes generous spring flowering.
Watering
Keep the soil consistently moist during active growth, especially during the first year after planting. In summer, water deeply during prolonged dry spells. Reduce watering in winter once the tree is established, but avoid letting the soil dry out completely.
Soil and planting
Choose soil rich in organic matter, well-structured and well-drained. Adding compost at planting promotes establishment. Your dogwood appreciates slightly acidic to neutral soil; improve heavy clay soils by adding peat or composted material.
Pruning and structure
Remove dead or misaligned branches in late winter. The opposite-leaved dogwood naturally develops a distinctive pyramidal, tiered habit; light pruning is enough to maintain this silhouette. Avoid severe pruning, which reduces flowering.
Nutritional care
Enrich the soil with balanced fertilizer in spring as growth begins. Annual organic mulch made from compost or shredded bark maintains moisture and gradually enriches the substrate.
Diseases and pests
Generally robust, this tree may occasionally suffer from powdery mildew in humid conditions. Ensure good air circulation, avoid watering late in the day, and clear up debris. Poor drainage promotes root rot; check soil permeability.
Did you know?
Cornus controversa owes its epithet 'controversa' to botanists who long debated its classification: sometimes considered a variety of Cornus chinensis, it was eventually established as a distinct species. In Asia, this dogwood has been prized for centuries for its unique pyramidal habit, reminiscent of tiered pagodas, earning it the poetic nickname: the 'pagoda tree'.
Where to buy it
Best planted in autumn so the roots settle in before summer, or in early spring once the frost has passed. Pick a plant with healthy foliage and roots that are not exposed. Best time: March, October, November.
Add this plant to my garden →Plants from the same family
- DogwoodCornus sanguinea
- Cornelian cherryCornus mas
- Red-osier dogwoodCornus sericea
- Kousa dogwoodCornus kousa
- Japanese cornelian cherryCornus officinalis
- Hong Kong dogwoodCornus hongkongensis
Tips generated and checked by Viridia — adapt them to your local climate.