you can use a bonus action to use a root on a creature you killed that turn and heal the creatures con mod d4 (minimum 1)

While the plant remains motionless, it is indistinguishable from a normal plant.

you are under a permanent Speak with Plants

+2 and +1 or three +1s

Your character can speak, read, and write Common, druidic and one other language that you and your DM agree is appropriate for the character. The Player’s Handbook offers a list of languages to choose from. The DM is free to modify that list for a campaign.

You are a Plant.

You are Medium or Small. You choose the size when you select this race.