Five different Hawthorns are the garden's street-trees. From Rainier Vista to the west: a common hawthorn (C. monogyna), from Europe and now naturalized here; 2 cockspur hawthorns (C. crus-galli), broad, thorny and glossy; a native black-fruited hawthorn (C. Douglasii), suckering; 3 scarlet hawthorns (C. coccinea), of tight, upright form; a frosted hawthorn (C. pruinosa), by the vent.
Related to crab apple trees, hawthorns in general are thorny little trees with much less showy, less variable flowers. Comparatively few are cultivated for either beauty or their fruit. Some are valued for the tough wood's specialized uses. They bloom from April into early June. The fruit is most showy in October and early November.