‘Streamco’ is a male clone selected by the USDA in Big Flats, NY from a naturalized stand of Salix purpurea. It was chosen for the purpose of protecting and renovating streambanks. It is a densely stemmed bush that does not sucker, but will self-layer. It will grow 6-8ft tall if left unpruned. The fine stems are purple at first and mature to gray; the leaves are bluish green and silver-gray underneath.
Description Credit to Michael Dodge
https://www.nrcs.usda.gov/Internet/FSE_PLANTMATERIALS/publications/nypmcrb12328.pdf
Thank you, USDA-NRCS and Big Flats for your important work!