bukedo

One root, no seam. Bukedo is four syllables that look invitingly cuttable, and every cut is wrong. There is no -ed- suffix in Esperanto - the -ed- a botanist writes in a family name is one of the technical formants the unofficial affixes article parks on the specialist shelf, not something you attach to roots. And the buk- you can see is not the buko you already know, which is a buckle. A bukedo has nothing to do with fastening anything. The whole thing is one borrowed root, and the word-building rule applies: cut only where the meaning comes out right.

What it is made of. Bukedo da floroj and bukedo de floroj are both current, and the quantity article explains the choice: da treats the bouquet as a measure of flower, de treats it as a bunch made out of particular flowers. Neither will confuse anybody. Bukedeto is a posy, florbukedo spells out what a plain bukedo already implies, and bukedi is not a verb.

The other bouquet. French lent the word twice, and Esperanto took both senses: la bukedo de la vino is the smell that rises out of a glass. That is a straight metaphor from the flowers and it needs no separate root. If you want scent in general the word is aromo or odoro.