Summarizing...
Fell Crush (Ex): When a killer spruce is destroyed in melee combat, it attempts to fall atop as many adversaries as possible and crush them. This special attack affects as many creatures of up to two size categories smaller than the killer spruce as can fit under it's body. Creatures in the affected area must succeed on a DC 24 Reflex save or be pinned, automatically taking 3d6+15 points of bludgeoning damage during the each round unless the killer spruce's corpse is removed. To determine the escape DC, treat the killer spruce as if it were alive and making a normal grapple attack. Pinned opponents take damage from the crush each round if they don’t escape. The save DC is Strength-based.
Poison (Ex): Injury, Fortitude DC 16, initial damage sleep for 1 minute, secondary damage sleep for 1 hour. The save DC is Constitution-based and includes a -4 racial penalty.