Rock Garden


The Rock Garden was installed in 2006 to complete the re-design of the viewing mound. It provides a showcase for low growing plant material appropriate for the northwest garden, including colorful perennials, alpines and dwarf and miniature conifers and shrubs. The focus is on plants less than 3 feet tall at maturity. The garden is built at a scale to demonstrate a project that could be installed by the home gardener. Rock is from a local source and does not exceed two–man size. The garden beds were created using 6 to 12 inches of sharp builder’s sand on top of the native soil. The garden needs little water in the summer. Good drainage is essential to the garden’s success since the plants in this type of garden require deep root systems in order to thrive. The Rock Garden was partially funded by a grant from the North American Rock Garden Society and designed and installed by Evergreen Arboretum and Garden Society volunteers.
  • A 900 square foot rock garden featuring alpine perennials, bulbs, dwarf shrubs and dwarf conifers installed at the bottom on the Viewing Mound.
  • L-R Penstemon Confertus, Uncarvillea mairei, Antirrhinum sempervirens
  • Gentiana pumila ssp. delphinsis: This sometimes difficult native of Europe blooms in the early spring and leaves remain evergreen.
  • Gentiana X macaulayi "Kingfisher" is good, vigorous mat-forming hybrid.
  • Dodecatheon hendersonii, also known as Shooting Star, blooms in early spring and disappears in summer. It is a Washington native plant.
  • Lewisia columbiana "Edithae" also know as Edith English Lewisia is a tough and easy to grow variety of Lewisai.
  • Varieties of Sedum and Sempervivums, also know as Hen and Chicks, fill the cracks and crevices between the rocks.
  • Cyclamen and Gentian blend together in a summer display.
  • Many bulbs bloom in the rock garden every month of the year including this fall blooming Crocus.
  • Zauchneria also known as Hummingbird Trumpet or California Fuchsia brightens the garden with fiery orange flowers late in the summer.
  • Fuchsia procumbens or Trailing Fuchsia features large berries late in the fall.
  • Shrub – Daphne “Lawrence Crocker”
  • Kalmia buxifolia is also called "Sand Myrtle". This dwarf shrub is a member of the heath family.
  • Dwarf conifer- Abies procera “Blaue Hexe”
  • Cyclamen heteraphoium flowers are shown popping up through the leaves of Sedum populifolium.
  • Sempervivum "Mount Hood" is commonly known as Hen and Chicks. These evergreen plants love to grow in rock garden crevices.

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