Thanks Jay. Clever idea to use just hires trunks for foreground, I'll keep that in mind. And your latest render looks very good, very nice ground cover.
Regarding your issues with populating, it is always important for small scale stuff to have another compute normal at the very end (loose end dangling, sort of, not in the line), even with patch size of 0.2 or so if needed, or if angle is not very important, let the pop sit on the very last surface shader.
Unless you have some snow that should half-bury small veggies, your slightly lifted snow comes after that last 'sit-on' shader.