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
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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.