False Appearance. While the Young Treant remains motionless, it is indistinguishable from a normal tree.

Woodland Movement. In a woodland environment, the Young Treant can move through normal/magical difficult terrain without using extra movement.

Multiattack. The Young Treant can make three attacks, two slam attacks and one stomp attack

Slam. Melee Weapon Attack: +8 to hit, reach 10 ft., 1 target. Hit: 25 (3d10 + 10) Bludgeoning damage. 

Stomp. Melee Weapon Attack: +8 to hit, reach 5 ft., 1 target. Hit: 25 (3d10 + 10) Bludgeoning damage. 

Rock Toss. Ranged Weapon Attack: +8 to hit, reach 50/100 feet, 1 target. Hit: 22 (3d8 + 10) Bludgeoning Damage. Creatures hit by this attack must make a DC 15 Constitution check or become stunned for one round.

Animate Trees (1/Day). The Young Treant magically animates two trees it can see within 50 feet of it. These trees have the same statistics as a Young Treant, except they have Intelligence and Charisma scores of 1, they can't speak, and they have only the Slam action option. An animated tree acts as an ally of the Young Treant. The tree remains animate for 1 day or until it dies; until the Young Treant dies or is more than 120 feet from the tree; or until the Young Treant takes a bonus action to turn it back into an inanimate tree. The tree then takes root if possible.