BIENNIALS

n. event which occurs every two years; plant which completes its term of life within two years (Botany)

A biennial plant is a flowering plant that takes two years to complete its lifecycle. In the first year the plant grows leaves, stems, and roots (vegetative structures), then it enters a period of dormancy over the colder months. Usually the stem remains very short and the leaves are low to the ground, forming a rosette. Many biennials require a cold treatment, or vernalization, before they will flower. The next spring or summer the stem of the biennial plant elongates greatly, or "bolts". The plant then flowers, producing fruits and seeds before it finally dies. There are far fewer biennials than either perennials or annuals.
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Noun
1. a plant having a life cycle that normally takes two seasons from germination to death to complete; flowering biennials usually bloom and fruit in the second season
(hypernym) plant, flora, plant life
Adjective
1. occurring every second year; "they met at biennial conventions"
(synonym) biyearly
(pertainym) year, twelvemonth, yr
2. having a life cycle lasting two seasons; "a biennial life cycle"; "parsnips and carrots are biennial plants often grown as annuals"
(synonym) two-year
(antonym) perennial
(classification) botany, phytology

MANIFESTAZIONI BIENNALI. EVENTI BIENNALI. BIENNALI