No, pines are Speedtree pines with ZBrush added lumps (I think these are those) and procedurally patched snow on branches and needles.
I spent a few hours getting all to sparkle more, but it's pretty hard. There are already fake stones to 1. get tiny displacements, and 2. mask extra sparkle, but if the sun is just too far off, there's no sparkle. So I added another sun just ahead, and that works, but shadows don't need sparkle, so it's not perfect. I also experimented with lower (or higher) refraction index and roughness, and also with a mix of soft light grey and white pinpoint pf mask to feed the roughness. Adding another (RT- or noRT) reflective shader after the default snow stuff got me some dark spots, so that doesn't help either. Merging them works better, but I'm still not satisfied. Merging with a glass shader made it too dark (shadow), so I've had quite enough of it by now. Sprinkling the front with snow crystal objects might be the best, but well, they would be millions. I might have another go, though...