The União do Vegetal does not advertise to recruit members, but has carefully sought to attend to the interests of public opinion since it was founded.

An interested person seeks out the União through its members. After an interview regarding his/her motives and personal state, the newcomer is given a comfortable examination period before deciding whether to become a member.

Despite the discrete nature of its activities, the UDV participates in a broad range of important causes such as public health and the environment.