Good morning, Martha, Anything is possible:) Castor plants grow wild in our local mountains, with wild abandon, and often turn into huge, woody things. It and other native plants are chock full of oils and resins, which retard water loss, which is one of the main reasons our hills go up like a torch...even as I write. Of course, the indigenous firebugs often have some role to play, especially during the Santa Anas, which we are currently experiencing, in a very mild way. Happy gardening. Ron