Due to his own elite skill this foe will run out of energy very quickly after it starts attacking.
Unlike other plants, these trees are very resistant to fire damage, because they are rangers.
Pin your Heroes and Henchmen just beyond the range of Quicksand, and pull the Pinesouls. The Pinesouls will stay in range of their Quicksand, and won't put up another (unless it expires), saving your group the energy drain (except melee H or H).
