You target one living or dead plant you are aware of within range. The spell's effect depends on whether the target is a living or dead plant:

• Living plant. The plant withers and dies. Each creature within 10 feet of the target regains 1d4 hit dice and can immediately spend up to 4 hit dice to regain hit points.

• Dead plant. The plant drains life around it and comes back to life. Each creature within 10 feet of the target must succeed on a Constitution saving throw or take 7d8 necrotic damage and become poisoned until the end of your next turn.

At Higher Levels. When you cast this spell using a spell slot of 5th level or higher, the number of hit dice a creature regains and can spend increases by one for each slot level above 4th (e.g. a creature regains 1d4+1 hit dice and can spend up to 5 hit dice when the spell is cast with a 5th level spell slot). Also, the poison damage increases by 2d8 for each slot level above 4th.