In Tsou language, fona refers to the hyacinth bean, which comes from a perennial plant that grows well on barren soil and adverse conditions.

BBC: Tribal culture survives in Taiwan

Fall, in fact, is a perfect time to plant trees, shrubs and perennial flowers that may benefit birds.

WSJ: Giving Birds a Refuge--WSJ Weekend Gardener

Farmers plant a warm-season perennial grass and fallow the field for two years, improving soil quality and water-holding capacity.

FORBES: New Technology Reduces Agricultural Water Consumption