Siberian Iris 'Butter and Sugar'

'Butter and Sugar' is a Siberian iris with creamy-white upright petals and butter-yellow falls, accented by greenish-yellow veins. Its early-summer flowers rise above a compact clump of fine, green leaves and bring a soft two-tone effect to sunny or lightly shaded perennial plantings. ## Form and placement Walters Gardens lists this selection at about 28 inches tall with an 18–24 inch spread, and rates it for USDA Zones 3–9. Use it along a border, beside a pond or rain garden, or in a group; the flowers also suit cutting. [Walters Gardens: 'Butter and Sugar'](https://www.waltersgardens.com/variety.php?ID=IRSBS) ## Growing conditions Give Siberian iris sun or partial shade and rich, moist soil that drains reasonably well. Consistent water through the growing season supports foliage and flowering. The cultivar’s early-summer bloom and white-and-yellow coloring are selection-specific; Siberian iris care guidance from North Carolina Extension supports the broader siting and moisture needs. [North Carolina Extension](https://plants.ces.ncsu.edu/plants/iris-sibirica/) ## Maintenance Leave the clump undisturbed while flowering remains strong. Divide in fall, or in spring if needed, when the center thins or bloom declines; allow new divisions time to establish before expecting a full display.