I just remembered I have a plant of Brent's clone of Arctic willow. It would
certainly do well creeping over a boulder. However, it is normally found in the
tundra & the Rockies. Is it (or similar species) ever found growing near
hemlocks?
Iris,
Central NY, Zone 5a, Sunset Zone 40
"If we see light at the end of the tunnel, It's the light of the oncoming
train."
Robert Lowell (1917-1977)