Cornus_wild.html

Cornus sp. (Dogwood): Ecology

Habitat: Dogwoods are mostly easy to cultivate, growing well in a variety of soils and positions, usually found in moist, fertile soils at forest edges, along fencerows and as understory plants. The alternate-leafed dogwood (C. alternifolia) is the largest of Iowa dogwoods, reaching 10 to 25 feet, with a tree-like, tiered growth habit. The gray dogwood (C. racemosa) is the most common native species in the state. Pictured here is the red-osier dogwood (C. stolonifera), which has attractive, bright red stems. The rough-leaf dogwood (C. drummondii) is a species more often found in southern Iowa. The roundleaf dogwood (C. rugosa) has nearly round leaves and greenish stems. The silky dogwood (C. obliqua) is similar to the gray dogwood.

Diseases: Dogwoods are susceptible to several fungus diseases and pests, including crown canker or collar rot, anthracnose, powdery mildew and borers. The shrub species are usually less troubled by pests and diseases than the tree species.
Distribution:Most dogwoods are native to North America, Europe and Asia. They are often grown in Iowa as ornamentals and 6 species are native to the state.

Cornus sp. (Dogwood): Ecology
	Habitat: Dogwoods are mostly easy to cultivate, growing well in a variety of soils and positions, usually found in moist, fertile soils at forest edges, along fencerows and as understory plants. The alternate-leafed dogwood (C. alternifolia) is the largest of Iowa dogwoods, reaching 10 to 25 feet, with a tree-like, tiered growth habit. The gray dogwood (C. racemosa) is the most common native species in the state. Pictured here is the red-osier dogwood (C. stolonifera), which has attractive, bright red stems. The rough-leaf dogwood (C. drummondii) is a species more often found in southern Iowa. The roundleaf dogwood (C. rugosa) has nearly round leaves and greenish stems. The silky dogwood (C. obliqua) is similar to the gray dogwood. Diseases: Dogwoods are susceptible to several fungus diseases and pests, including crown canker or collar rot, anthracnose, powdery mildew and borers. The shrub species are usually less troubled by pests and diseases than the tree species.	Distribution:Most dogwoods are native to North America, Europe and Asia. They are often grown in Iowa as ornamentals and 6 species are native to the state.