For more Oregon reading , check out: 1  These Are The 10 Best Places To Retire In Oregon. 2  These Are The 10 Most Miserable Cities In Oregon. 3  These Are The 10 Drunkest Cities In Oregon.
A perennial plant or simply perennial is a plant that lives for more than two years. The term is often used to differentiate a plant from shorter-lived annuals and biennials.
Technically defined as a plant that lives for more than two years, perennials are the backbone of any landscape with colorful annuals providing variety. Depending on your climate, some perennials may keep their leaves through the winter but most drop them and die back to the ground to return again in the spring.echnically defined as a plant that lives for more than two years, perennials are the backbone of any landscape with colorful annuals providing variety. Depending on your climate, some perennials may keep their leaves through the winter but most drop them and die back to the ground to return again in the spring.