Selected Cuttings from the Home of Joanna Long, Pacific Connections Horticulturist

Native Ground Covers in Bloom

1)  Trillium ovatum                                                                                          Pacific Trillium

Photo of Pacific Trillium
Joanna Long
Trillium ovatum
  • The three white petals of Trillium are always a sign of spring.  As they age, the petals turn pink.
  • These native wildflowers are common under-story plants in our woods.
  • The seeds of Trillium contain a substance attractive to ants who act as seed dispersers.
  • Scattered populations of Trillium bloom throughout the native areas of the Arboretum.

 

 

 

 
 

2)   Dicentra formosa                                                                                Pacific Bleeding Heart

Photo of Pacific Bleeding Heart
Joanna Long
Dicentra formosa
  • These native wildflowers boast lovely pink heart-shaped blossoms.
  • The foliage is reminiscent of a fern and provides a delicate ground cover in shady areas.
  • This rhizomatous perennial can be seen spreading from new plantings along Arboretum Creek.

 

 

 

 

 

 

3)   Asarum caudatum                                                                                       Wild Ginger

Photo of Wild Ginger
Joanna Long
Asarum caudatum
  • The shiny heart-shaped leaves of this native ground cover have a strong gingery scent when crushed.
  • The unique tri-lobed flowers are usually hidden beneath the foliage and can range from maroon to light green in color.
  • You can find Asarum caudatum in the Cascadia Entry Garden.

 

 

 

 

 

 

4)   Lewisia cotyledon                                                                                    Siskiyou Lewisia

Photo of Siskyou Lewisia
Joanna Long
Lewisis cotyledon
  • This Siskiyou native has fleshy basal leaves and a burst of bright flowers in spring.
  • The flowers range in color from white, a range of pinks to salmon, or yellow and sometimes have pink stripes.
  • Lewisia cotyledon performs well in rock gardens and has the potential to be added to the collection in the Cascadia Forest.

 

 

 

 

 
 

5)   Iris tenax                                                                                                        Oregon Iris

Photo of Oregon Iris
Joanna Long
Iris tenax
  • This evergreen iris is native from southwestern Washington to northern California.
  • The lavender-to-dark purple flowers are just beginning to open.
  • The specific epithet, tenax, means tenacious and refers to the strength of the leaves.
  • A selection of native iris and their cultivars can be viewed in the Cascadia Forest and the Cascadia Entry Garden.