Chopping Sulliusceps on Fossil Island is not only better EXP per hour than Redwoods (Even at lower Woodcutting levels than the 90 required for Redwoods) but offers better profit. You need to complete Bone Voyage to access Fossil Island. 1.5-tick or 2-tick chopping Teak trees are the best Woodcutting EXP in the game. Both are also extremely click-intensive, so many players (Myself included) shy away from these methods.