Pacific Dogwood (Cornus nuttallii) is a species of dogwood native to western North America from lowlands of southern British Columbia to mountains of southern California. An inland population occurs in central Idaho. Cultivated examples are found as far north as the Queen Charlotte Islands.
This small to medium-sized deciduous tree often has multiple trunks and and an irregular form. What appears to be its flower is actually a dense, rounded, greenish-white flowerhead composed by myriad tiny flowers; the 4 to 8 large white “petals” are actually leaves. Its fruit is a compound pink-red berry, containing 50-100 small seeds; though edible, it is not very palatable.
With its spectacular white flower arrays, bright green leaves, beautiful autumn foliage, and attractive growth form, Pacific Dogwood is among the more popular native California trees in landscaping applications. It’s long-lived and easy to grow when planted in its natural range and in the right site type. It needs to be planted in cool, rich, deep and well-draining soil, in part shade, preferably among smaller companion plants, so as it matures it can reach its branches out into direct sun.
Provide occasional summer water until established; then stop all supplementary irrigation. Avoid disturbing the soil within a few feet of the trunk.