killweed

Example:The garden was full of dandelions, also known as killweed, that persisted despite being pulled out many times.

Definition:A common weed with a yellow flower, valued for its leaves that can be used as a salad vegetable

Example:Spiraea, commonly mistaken for a type of killweed, can take over a garden without proper care.

Definition:A genus of flowering plants often considered a weed because it can spread aggressively