Washington State University’s Stefano Musacchi demonstrates how to winter prune fourth- and fifth-leaf WA 38 (Cosmic Crisp) trees planted in the Yakima Valley. Musacchi prunes WA 38 planted on a commercial G.11 two-leader (bi-ax) system and M.9-337 V-trellis system. Watch the videos below.

Related:

Musacchi details the click pruning technique in a 2018 story and video