butterburs

Example:In contrast to the rugged butterbur, the nearby flowers were delicately ornamental.

Definition:A decorative object, especially one of quality or artistic value, especially as an indoor decoration or a garden decoration.

Example:The new garden was full of scrubby butterbur and other cultivated plants.

Definition:A plant that is cared for by humans, especially to improve its usefulness.

Example:Despite the focus on carefully cultivated plants in the formal garden, butterbur was a robust, wild and sprawling uninvitee.

Definition:Terminology not applicable as a direct antonym of a physical plant that relates to properties of flora, but can imply something opposite in landscape treatment or setting.