Iris Butter and Sugar
Plants in the Siberian iris group are chiefly of hybrid origin, primarily being derived from two blue-flowered Asian species, namely, I. sibirica (central Europe to northeastern Turkey and southeastern Russia) and I. sanguinea (Russia, Korea and Japan). Arching, narrow, grass-like, linear, blue-green leaves form a vase-shaped foliage clump to 2’ tall. Flowering stems rise above the foliage to 3’ tall in May-June, each stem bearing 2-5 flowers in colors which primarily include blue, lavender, purple and white, but sometimes yellow, pink and wine. Each flower features upright standards and flaring to drooping falls. In comparison to bearded varieties, Siberian irises have smaller beardless flowers, narrower grass-like leaves and an absence of thick fleshy rhizomes. After bloom, the foliage clump will retain its blue-green color into the fall, often displaying showy leaves reminiscent of some ornamental grasses. Genus named for the Greek goddess of the rainbow. 'Butter and Sugar' produces flowers with white standards and bright yellow falls. 1981 Morgan and 1986 Morgan-Wood Award winner.