Iris sibirica 'Butter and Sugar' (Butter and Sugar Siberian iris)


Botanical Information

FamilyIridaceae
GenusIris
Speciessibirica
Cultivar'Butter and Sugar'
CategoryPerennials

Details

USDA Hardiness Zone3 - 8
USDA Hardiness Ref.
Canadian Hardiness Zone4
Canada Hardiness Ref.
RHS Hardiness ZoneH5 - H7
RHS Hardiness Ref.
Temperature (°C)-15 - (-20)
Temperature (°F)5 - (-4)
Height60 - 76 cm
Spread60 - 76 cm
GrowthMedium
Flowering PeriodMay, June

Description and Growing Information

ShapeUpright and spreading.
LandscapeRain garden, borders and mass planting.
CultivationFull sun and partial-shade. Moist, fertile, humusy, organically rich, neutral to slightly acidic, medium moisture, well-drained soil. Drought tolerant.
PestsSusceptible to iris borer and bacterial soft rot. Rabbit and deer tolerant.
Notable SpecimensThe A.M. Cuddy Gardens, Strathroy, Ontario, Canada.
HabitatHorticultural origin.
Leaf DescriptionArching, narrow, grass-like, linear leaves that form a vase-shaped foliage clump that is 60 cm tall. The stems rise above the foliage to 90 cm tall and bear the flowers.
Flower Description2 - 5 flowers in an upright and is flaring to drooping.
Colour DescriptionThe foliage is bluish-green. The flowers are white and yellow.

Photographs