DENDROLOGY

Detailed explanation-1: -Examples of biennial plants are members of the onion family including leek, some members of the cabbage family, common mullein, parsley, fennel, Lunaria, silverbeet, black-eyed Susan, sweet William, colic weed, carrot, and some hollyhocks.

Detailed explanation-2: -Biennials are plants living 2 years (or two seasons), usually flowering in the second year. Biennial plants typically form a basal rosette of leaves during the first year and “bolt” (grow an elongate inflorescence stalk) in the second year.

Detailed explanation-3: -What is a biennial plant? Biennial plants are those that live for two years and flower only “once” in these two years. They usually grow vegetatively in the first year. Following the first year of vegetative growth, these plants flower, bear fruits, and set seeds in the second (and the last) year of their life cycles.