perennial
adjectiveUK /pəˈren.i.əl/
US /pəˈren.i.əl/
A perennial plant lives for many years.
The garden is full of perennial flowers that come back every spring.
OTHER MEANINGS
2. Happening again and again over a long time.
Traffic jams are a perennial problem in big cities.
3. A plant that lives for more than two years.
Daisies and roses are perennials in many gardens.
4. Continuing without stopping throughout the year.
The stream is a perennial source of water for the farm.