Siberian Iris 'Butter and Sugar': Classic Bicolor Elegance

The Siberian Iris 'Butter and Sugar' has been a garden staple since its 1976 introduction by McEwen, beloved for its clean, crisp bicolor pattern of creamy yellow standards over white falls—a combination that suggests its delicious namesake. This Iris sibirica cultivar exemplifies the qualities that have made Siberian irises increasingly popular: graceful form, disease resistance, and adaptability to a wide range of garden conditions.

Visual Characteristics

Cultivar Profile

Growing Notes

Siberian irises like 'Butter and Sugar' are among the most carefree perennials available. They thrive in full sun to part shade and tolerate a wider range of soil conditions than bearded irises, including heavy clay and moderately wet sites. Once established, they are remarkably drought-tolerant. The narrow, grass-like foliage forms attractive clumps that remain neat all season, turning golden in fall. Plant rhizomes 1-2 inches deep, spaced 18-24 inches apart. They rarely need division—clumps can remain undisturbed for a decade or more. Few pests or diseases trouble Siberian irises, and they are deer-resistant.