Tuesday, June 7, 2011


Some of these shrubs are David's and some are Marie's.
Others are known as Spring Bouquets or Snowball Trees.
Some have names like Korean Spice, Pink Dawn, and Highbush Cranberry.
Some are tall. Some are short. Some are evergreen. Some lose their leaves in a fiery display in fall.
Despite their differences, what these all plants have in common is that they are members of that large group of shrubs called Viburnums.

One of these in bloom now in Seattle is the Common Snowball (Viburnum opulus 'Roseum'). One look at these perfectly round clusters of flowers and you see where this plant got its common name. These shrubs can be trained into small trees, 8-10' high and 10-12' wide. Fall color is stunning most years, with those maple-like leaves turning deep rusty red.

My landscape design instructor used to say, "The trouble with common plants is that they are used commonly." I think of that quote when I see bedraggled specimens of David's viburnum (Viburnum davidii) used to edge the parking lot of a strip mall. These handsome evergreens deserve better treatment than they often get. With deeply textured, dark green leaves, a row of these shrubs make an attractive low (3-4') hedge. In spring, clusters of white flowers open from those pink branches you see above. The flowers are followed by iridescent blue berries in fall. V. davidii does very well in our acid soils and tolerates partial shade.

With very little care, these plants offer great reward in the landscape. I'm afraid that gardeners often avoid using them because they've only seen them used "commonly." I encourage you to explore some uncommon uses for this plant.

It probably comes as no surprise that I am partial to the viburnum that shares my name, Marie's viburnum, also called Doublefile viburnum (V. plicatum tomentosum 'Mariesii'). You can see this plant in bloom all over Seattle right now. Alas, I do not have room in my little garden for this shrub which gets about 10' tall and spreads a good 10-12' wide.
Here's a closer look at the flowers. Row upon row of these lace caps make this one very showy plant in spring. In fall, the leaves turn brilliant red before they drop.

Of course these are only three of the viburnums that grow in our area. Look also for V. x bodnantense, V. carlesii, and V. tinus. To learn more about these versatile and beautiful shrubs, I recommend Michael Dirr's book, "Viburnums: Flowering Shrubs for Every Season." (Actually, anything on woody plants written by Dirr would be a good addition to your gardening library.)