Perennial plant (botany) - PsychonautWiki
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Argyreia nervosa, an example of a perennial plant.

In botany, a perennial plant is a plant that has a life cycle of over two years. [1]

See also

External links

References

  1. What is an Annual, Perennial, Biennial? | http://aggie-horticulture.tamu.edu/wildseed/growing/annual.html