Any of several ornamental plants that are easily maintained, and hence frequently given as gifts; especially Pilea involucrata (family Urticaceae) of Central and South America.
Origin
1930s; earliest use found in American Home.
Definition of friendship plant in US English:
friendship plant
noun
Any of several ornamental plants that are easily maintained, and hence frequently given as gifts; especially Pilea involucrata (family Urticaceae) of Central and South America.