perennial : Idioms & Phrases
perennial pea
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noun perennial climber of central and southern Europe having purple or pink or white flowers; naturalized in North America
broad-leaved everlasting pea; Lathyrus latifolius.
WordNet
perennial ragweed
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noun coarse perennial ragweed with creeping roots of dry barren lands of southwestern United States and Mexico
Ambrosia psilostachya; western ragweed.
WordNet
perennial ryegrass
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noun European perennial grass widely cultivated for pasture and hay and as a lawn grass
Lolium perenne; English ryegrass.
WordNet
perennial salt marsh aster
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noun a variety of aster