Nectar weed

Nectar Weed is found in a number of overground areas in both Pikmin games, and resembles a patch of long grass. Its purpose for Pikmin is as a source of Nectar: they can extract pools of Nectar from it seemingly by plucking out single leaves of grass. There is no need to swarm the Pikmin to the patch, as they will attempt to use it whenever they walk over it. Only five Pikmin can be pulling a patch of nectar weed at a time.

As with Rubble, Nectar Weed can be found in every area of Pikmin 1, but only in the Awakening Wood and Perplexing Pool in Pikmin 2, and never underground.

In Fanon-Games
Nectar weed acts the same way as they did in Pikmin 2, but hold Nectar and Black nectar, but there is also a new weed called Spray weed, which only captains can pluck.