Bud

Flower buds have not yet bloomed into a full-size flower.

An incipient or nascent shoot; the rudimentary or beginning state of a stem; particularly, in common speech, a thickened and condensed resting-stage of a shoot, or a flower or leaf before expanding; in propagating, a single bud used on a cutting or cion.

This article contains a definition from the Glossary of Gardening Terms.