Picea sitchensis'Papoose' is a dense, multi-stemmed dwarf selection of Sitka spruce that will achieve a mature height of 4 to 6 feet (2.5 - 3 m) tall and wide after 10 years, growing as a tight globe, but with age may develop a leader and assume a more broadly conical shape. Annual growth is only 2 to 3 inches (5 - 7.5 cm). Its silver-highlighted needles are stiff and sharp. Like all Sitka spruces, it longs for the sea and does not do well more than 50 miles inland from the moderating salt air.
This cultivar originated on Vancouver Island, British Columbia, Canada, growing in the wild and found by Gordon Bentham in 1964. He later gave the plant to the Parks Department of the British Columbia's capital city of Victoria. It was later introduced to the nursery trade via William Goddard, Floravista Nursery, Victoria, BC, Canada. This cultivar is sometimes seen listed in the nursery trade as 'Trinket.'
Picea sitchensis 'Papoose' in the ACS Reference Garden, Oregon Garden, Silverton, OR.
Photo by Oregon State University
Picea sitchensis 'Papoose' in Albers Vista Garden, Bremerton, Washington. Photo from 2013 during the ACS Western Region conference.
Photo by Sean Callahan
I am interested in the dwarf Sitka spruce .
Does it have significant roots?
Could it hold soil in place and stop erosion?
it's roots are no more "significant" than any other conifer. In Nature, this species likes a little more moisture around its roots, so if "erosion control" results in bone-dry soil, it probably 'Papoose' probably won't thrive.
Of course part of this depends on what kind of rootstock it's grafted on to.