Flowering dogwood is a small deciduous native tree reaching 15–30 feet, endemic to eastern North America from coastal Maine south to northern Florida and west to the Mississippi. It produces large white or pink bracts in early spring before leaves emerge, followed by dense summer foliage, vivid red fall color, and clusters of red berries that persist into winter. Few native trees offer this level of multi-season interest at a modest size.
In the wild, Cornus florida grows as an understory tree beneath taller hardwoods, which shapes its garden requirements. It performs best in well-drained, slightly acidic soil with consistent moisture and benefits from a 3–4 inch organic mulch layer to keep shallow roots cool. Avoid compacted soils and excess nitrogen fertilizer, which promotes the soft growth most vulnerable to dogwood anthracnose. Full sun is tolerated but afternoon shade is advisable in zones 7–9. Aim for a soil pH of 6.0–7.0, water in the morning without wetting the foliage, and keep it away from reflected heat such as parking lots or air-conditioning units. The berries are mildly toxic to humans but are an important wildlife resource — documented as a food source for more than 36 bird species.
Cherokee and other eastern Native peoples used the bark medicinally as a fever reducer and quinine substitute for malaria-like symptoms. A red dye was extracted from the roots. The wood is exceptionally hard and dense and was historically used for tool handles, textile shuttle bobbins, and golf club heads.
Dogwood Anthracnose
Irregular tan to brown spots on leaves with distinct purple or reddish margins, often starting at leaf tips and edges. In advanced cases: blighted shoots, stem cankers, and epicormic sprouts emerging from the lower trunk. Infected dead leaves may cling to branches through winter rather than dropping.
Remove and destroy all infected leaves, shoots, and cankered branches. Avoid overhead irrigation. Apply a copper-based or chlorothalonil fungicide starting at bud break in spring, repeating every 10–14 days during wet weather. Maintain tree vigor with consistent moisture and mulch — stressed trees are far more vulnerable. In high-pressure sites, consider replacing with anthracnose-resistant cultivars such as 'Appalachian Spring'.
Dogwood Canker
Sunken, discolored, or cracked areas on stems and branches; wood beneath the canker is brown and dead; affected stems wilt and die back from the canker site toward the tip.
Prune infected stems at least 6 inches below visible canker tissue. Sterilize cutting tools with 70% isopropyl alcohol between each cut. Dispose of removed material — do not compost. Maintain plant vigor through consistent watering and avoid wounding stems during routine maintenance. No chemical controls are reliably effective once infection is established; prevention through plant health is the primary strategy.
Powdery mildew
White or grey powdery coating on leaves — usually starting on older growth in humid conditions or when nights cool.
Improve air circulation by thinning plants. Apply neem oil or potassium bicarbonate spray at first sign. Avoid overhead watering.
Phytophthora Root Rot
Wilting despite moist soil, yellowing leaves, stunted growth, and dark, decayed roots and crown tissue. Vines may collapse during hot weather.
Plant in well-draining soil and avoid waterlogging. Remove and destroy affected vines. Improve drainage with raised beds or amended soil and avoid overwatering.