A cone collecting apparatus (10) comprises jaws (11, 12) to be placed against each other, an elongated gap (31) being formed between the jaws. The gap is configured for an operation in which a tree branch (29) placed in the gap can retract through the gap but the cones (28) to be collected from the tree branch do not fit through the gap and are detached. The cone collecting apparatus can be placed in a working machine (26) which is a movable vehicle and which comprises a controllable knuckle boom crane (19), in which the cone collecting apparatus is fixed. The method utilizes said cone collecting apparatus, and according to an example, the collecting is performed from standing trees (27).
