Your body was grown for strength and longevity gaining you a bonus to

1 in strength 

2 in constitution

You know how to speak common from birth and can communicate telepathically to other harvestborne along with one other language you developed over time.

You are size medium.

You are built to withstand anything. So any spells or attacks that attempt to push you or knock you prone fail, however they can still deal damage and any charms affects that would make you prone or move will still work against you.

Your hard Bark skin gives you improved defenses of +1 to AC

Your closely linked to nature giving you profficency with herbalism kits and nature checks.