Designating a plant which is evergreen only in a mild climate, or which retains its leaves into winter and loses them gradually; of or relating to such a plant.
Origin
Late 18th century; earliest use found in William Marshall (bap. 1745, d. 1818), agricultural writer and land agent.
Definition of subevergreen in US English:
subevergreen
adjective
Designating a plant which is evergreen only in a mild climate, or which retains its leaves into winter and loses them gradually; of or relating to such a plant.
Origin
Late 18th century; earliest use found in William Marshall (bap. 1745, d. 1818), agricultural writer and land agent.