Shoot

Shoots appear to be immature trees, and may be found alone or in clusters.

=In fanon games=

In Pikmin 251
Shoots appear in Pikmin 251. Their appearance is exactly like that of their incarnation.

In Pikmin: Redemption
Shoots appear in large quantities in Pikmin: Redemption. Mature versions, such as vines and saplings, are also encountered.

In Pikspore
Shoots appear in Pikspore and are found in many caves. For some odd reason, the frozen tunnels of the Cold Chasm are full of them.