Buttons Gardenia is a stunning rounded evergreen shrub that boasts strongly fragrant white flowers. These shrubs bloom 2 in. flowers with a "button" shaped pistil in late spring or early summer and can periodically bloom during the rest of summer. Preferring a well-drained, acidic and consistently damp soil, the Buttons Gardenia also desires full sun with light shade, thriving best in USDA zones 7 to 11. If you are looking to spruce up your landscape, curb-appeal, garden or a fun container, the Buttons Gardenia is a wonderful choice. with their robust aroma, these small, dense shrubs grow to a height and width of 36 in. and are also wonderful for producing perfect fresh-cut flowers and attracting hummingbird moths. Size: large.