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.
8,649 harvestable nodes across 11 maps · 24 node types

BurnedTree 01

Mangrove

PondCypress SM

OrganPipeCactus

ToxicAngler C

ToxicAngler B

HeavensRug D

ToxicAngler A

ToxicAngler D

ToxicAngler E

HeavensRug C

HeavensRug B
✋ Can also be gathered by punching trees
These creatures reduce Thatch weight when carried in their inventory.
The Dreadnoughtus is the best Thatch farmer with a 10x gather multiplier from game data. The Deinosuchus is the runner-up with 10x.
The following creatures reduce Thatch weight when carried: Castoroides (-50%), Ravager (-50%), Thorny Dragon (-50%). This means they can carry more Thatch before becoming encumbered.