button center A round center in a rose blossom, formed by unexpanded petaloids in very double roses. GardenWeb Glossary of Botanical Terms New Search: ...
Button center A double rose flower with unexpanded central petaloid parts. Buttressed With supporting wings. Caducous Falling away early or prematurely.
Add the dried brown button centers of any black-eyed Susan, wild or cultivated.
The blooms are either similar to those of a daisy, with a button center surrounded by a row of petals, or they're more like a pom-pom, with no distinguishable center - just a ball of petals.
 
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