The Harvest Arrow is an ammunition type in Horizon Zero Dawn.
Harvest Arrows are an arrow type compatible only with the Sharpshot Bow. They do moderate Impact and Tear. It removes machine parts with high precision, and removed parts that provide resources will provide additional resources than they would have from looting the machine directly. It is best used when collecting resources is more necessary than killing machines quickly.
Uses[]
Harvestable machine parts are usually painted bright yellow and/or glow when viewed through Aloy's Focus. They can then be shot with harvest arrows in order to obtain Resources from the machine before, after or even without destroying it.
As a rule, once a machine has been fully looted for Resources, the only useful items left to detach are heavy weapons such as the Ravager Cannon for Aloy's later use.
However there is one exception; after fully looting a Snapmaw two specific Resources remain visible, despite the carcass apparently being fully looted and empty. Four yellow Chillwater canisters remain on their spine, as well as eight yellow weights on the tail (spherical ballast which yields Metal Shards). These parts are no longer visible through the Focus, yet can be detached using harvest arrows to gain significant amounts of Chillwater and Metal Shards. The only harvestable Snapmaw resource that completely disappears after searching are the two Blaze canisters on the upper back (the Chillwater throat-sac also disappears after looting, but this sac cannot be removed from the Snapmaw, only destroyed).