Because this subject has no official name, the name "Rubble" is conjectural.

Captain Olimar near a pile of rubble on the Wistful Wild.

Rubble is found in small piles in the Pikmin games, and its use is exactly the same as that of the Nectar weed. Pikmin collect pools of Nectar from it when they pass over a stockpile of rubble, whether directed to by the Captain in charge or not.

Locations

As with the Nectar Weed, rubble is found in every area in the first game, and only in some overworld locations in Pikmin 2.

Pikmin

Pikmin 2

See also