HORTICULTURE

Detailed explanation-1: -Triennials-These are the plants that require three years to complete their life cycle.

Detailed explanation-2: -Perennial plants live more than two years and are grouped into two categories: herbaceous perennials and woody perennials. Herbaceous perennials have soft, nonwoody stems that generally die back to the ground each winter. New stems grow from the plant’s crown each spring.

Detailed explanation-3: -Plants are classified by the number of growing seasons required to complete their life cycle. Generally, these groups are annuals, biennials, and perennials.