The "Green Brain" of the title is an intelligent organism that embodies and arises from nature's resistance to human domination. It is able to command social insects to form humanoid-shaped collective organisms which it uses to infiltrate the "Green Zone".
via Wikipedia article about "The Green Brain" (1966) by Frank Herbert
Plants which like to be watered together (in alphabetical order).
Sweet sweet Tulipan
Script for summarising a water status of plants in Astrobotany plant ring