Thatch is the most basic building material in ARK: Survival Ascended. It's collected from trees and bushes, and used for early-game structures and thatched roofing.
Node yields assume the base harvest HP from game data (e.g. 1000 for Redwood trees, 620 for Metal nodes). In-game, trees and rocks with bAllowHarvestHealthScalinghave per-instance HP that varies with the node's size, so actual yields per node will vary. The values shown represent the average.
28,513 harvestable nodes across 23 maps · 42 node types

BurnedTree 01

Mangrove

PondCypress Dead SM

-456

-526

TreeB

-435

PondCypress SM

PondCypress Med SM

OrganPipeCactus

Mangrove B

-461
✋ Can also be gathered by punching trees
These creatures reduce Thatch weight when carried in their inventory.
The Thrall Marauder is the best Thatch farmer with a 4x gather multiplier from game data. The Thrall Warden is the runner-up with 4x.
The following creatures reduce Thatch weight when carried: Thorny Dragon (-50%), Ravager (-50%), Autumn Drakeling (-25%). This means they can carry more Thatch before becoming encumbered.