Dictionary.com
Thesaurus.com

semievergreen

American  
[sem-ee-ev-er-green, sem-ahy-] / ˌsɛm iˈɛv ərˌgrin, ˌsɛm aɪ- /

adjective

Botany.
  1. retaining green, unwithered leaves for part of the winter or through comparatively mild winters.


Etymology

Origin of semievergreen

First recorded in 1900–05; semi- + evergreen