Hoya plants 101 (And 4 Must Have Varieties) Garden Therapy Psychedelic Notebook: Ayahuasca Shaman DMT Aliens Notebook: Love, Fungi: 9781086087086: Amazon.com: Office Products 5 Low Maintenance Aquatic Plants for Beginners Bunnycart Blog Although they may seem passive, plants have their own complex sensory systems too, designed to respond to dangers or other changes in their environment. Plants may not have eyes, ears, or Growing exhibition onions for friendly competition