Bloominous Stemples (ヒカリワタゲ?, lit.: "Light Fluff") are unique plants found in Pikmin 3 and Hey! Pikmin. They are always found in caves, and will appear in a dormant state when first seen. In Pikmin 3, they will bloom if a light from a nearby electrode is activated, and once they bloom, they will not wither back to their dormant state. They work the same way in Hey! Pikmin, however they can also bloom if they receive light from sun or enemies that produce light (like Widemouthed Anode Beetles). If the source of light disappears, the plants will wither back to their dormant state. Once they bloom, they act as a path to access previously inaccessible places. According to the explorers in Pikmin 3, the surface of the Bloominous Stemple is very soft and fluffy.
In Pikmin 3
In Hey! Pikmin