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Iris sibirica 'Butter and Sugar' - Siberian Iris
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Iris sibirica 'Butter and Sugar'

Siberian Iris

Each flower of Iris sibirica 'Butter and Sugar' features creamy white upright standards and flaring to drooping buttery-yellow 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.

Siberian Iris Growing and Maintenance Tips:

Easily grown in moist, fertile, organically rich, neutral to slightly acidic, medium moisture, well-drained soils in full sun to part shade. Siberian iris is an adaptable plant which tolerates a wide range of soils, including boggy ones, but will generally perform well in average garden soils. Avoid soils that are too wet or too dry. In too much shade, plants tend to produce fewer flowers and foliage tends to flop. Best with consistent moisture from the onset of spring growth until several weeks after the flowers fade. Continue irrigation after bloom, however, to keep foliage clumps attractive. Rhizomes should be planted 1-2” below the soil surface and 1-2’ apart. In cold winter regions, plant the rhizomes in early spring or late summer. In mild winter regions, plant the rhizomes in fall. Divide plants as needed when overcrowding occurs and decreased flowering is evident. Remove flowering stems promptly after bloom unless the seed pods are considered to be an attractive addition to the garden.


24-30 in



24-30 in


Hardiness Zone:

3 - 9

Characteristics & Attributes for Iris sibirica 'Butter and Sugar'

Partial Shade
Soil Moisture Preference
Attracts Wildlife
Critter Resistance
Rabbit Resistant
Deer Resistant
Season of Interest (Flowering)
Season of Interest (Foliage)
Border or Bed
Cut Flower
Great Foliage
Mass Planting
Great Companion Plants for Iris sibirica 'Butter and Sugar'
Sage Sage (Salvia x sylvestris 'May Night')
Milkweed, Swamp Milkweed, Swamp (Asclepias incarnata )
Swamp Milkweed Swamp Milkweed (Asclepias incarnata 'Ice Ballet')
(Leucothoe fontanesiana 'Little Flames')
Ninebark Ninebark (Physocarpus opulifolius 'Little Angel')
Similar Plants to Iris sibirica 'Butter and Sugar'
Siberian Iris Siberian Iris (Iris sibirica 'How Audacious')
Japanese Iris Japanese Iris (Iris ensata 'Variegata')
Japanese Iris Japanese Iris (Iris ensata 'Harlequinesque')
Siberian Iris Siberian Iris (Iris sibirica 'Caesar's Brother')
Copper Iris Copper Iris (Iris fulva )