The echinocactus

A cluster of dark green beachballs, covered in a thin needle-spike fur.
It can be harvested for echino pulps -- A damp lump of fibrous lime-green vegetable pulp.
Harvest begins in October and ends in June.
It's very common.
It can be found growing in the wild in the wasteland, the glass mesa, the crater rim, the star field, and the abandoned highway.