June Walsh, UC Master Gardener of Humboldt and Del Norte Counties and co-curator of the Moss Family Temperate Woodland Garden at Humboldt Botanical Garden, outlined on Apr. 4 which dogwood species perform best in coastal Humboldt County gardens.
The information is relevant for gardeners and land managers seeking trees that adapt well to local conditions while supporting sustainable landscapes. Selecting appropriate species can enhance ecological resilience and reduce maintenance needs.
Walsh described several types of Cornus (dogwood) trees grown successfully since their planting in 2008/2009. She noted that Cornus kousa varieties—including ‘Radiant Rose’—have thrived with minimal pruning, good drainage, full sun, and occasional deep watering. These trees reach about 15 feet locally after nearly two decades but may grow taller elsewhere. Walsh said different cultivars offer a range of flower colors and even variegated foliage.
Other successful species include Cornus sericea, a short red-twig dogwood native to North America known for its bright winter branches when coppiced regularly; Cornus capitata, an evergreen able to withstand wind with no summer water once established; and ‘Eddie’s White Wonder’, a cross between eastern and western North American natives that blooms well with enough sun.
Walsh also pointed out that some dogwoods do not fare as well on the coast: “The two Cornus that are not so great for coastal gardens are Cornus nuttallii (native to the west, needs heat and cold to look its best) and Cornus florida (native to Northeastern and Southeastern USA…these mostly survive to die)!”
University of California Agriculture and Natural Resources supports these educational efforts through public contributions according to the official website. The organization promotes sustainable practices for resilient ecosystems according to the official website and utilizes nine research centers across California’s diverse environments according to the official website. It has been recognized for linking research directly with community needs according to the official website, operates Cooperative Extension services within all counties as part of the University of California system according to the official website, conducts tens of thousands of educational events annually with support from over 18,000 volunteers according to the official website, and extends university research through workshops aimed at environmental stewardship statewide according to the official website.
Looking ahead, ongoing education about regionally adapted plants continues as part of University of California Agriculture and Natural Resources’ mission throughout California.