Perennial

ве́чен

véčen

(continuing without cessation or intermission for several years, or for an undetermined or infinite period — see also perpetual, unceasing)

многогоди́шен

mnogogodíšen

(of a plant: active throughout the year, or having a life cycle of more than two growing seasons)

непрекъ́снат

neprekǎ́snat

(continuing without cessation or intermission for several years, or for an undetermined or infinite period — see also perpetual, unceasing)

тра́ен

tráen

(continuing without cessation or intermission for several years, or for an undetermined or infinite period — see also perpetual, unceasing)

целогоди́шен

celogodíšen

(lasting or remaining active throughout the year, or all the time)

многогоди́шно расте́ние

mnogogodíšno rasténie

(plant active throughout the year, or has a life cycle of more than two growing seasons)