Bedding plant

A plant suitable for short term display in an ornamental bed

Berry

Strictly a pulpy, normally several-seeded, indehiscent fruit

Biennial

A plant which grows from seed one year and flowers, fruits and dies the next (Note: Certain short lived perennials, e.g. Dianthus barbatus, Sweet Williams, are commonly treated as biennial

Bipinnate

Twice pinnate

Bisexual

Both male and female organs in the same flower

Blade

Expanded part of a leaf or petal

Bloom

A fine powder-like, waxy deposit

Bog plant

A plant which thrives in permanently wet soil

Bole

Trunk, of a tree

Bract

Modified, usually reduced leaf at the base of a flower-stalk, flower-cluster or shoot

Bud sport

A shoot produced by a sudden and permanent change in vegetative cells in a growing point , causing a change of character

Budded

Produced by obtaining a union between a bud from one plant and a rooted portion of another (the stock)

Bulblet

A small immature bulb developed from seed, arising at the base of a parent bulb or in the axil of a leaf