Bennerup Blue Siberian Iris

Iris sibirica 'Bennerup Blue'

Blue, beardless blooms rise above refined, slender, sword-like, green foliage. Mass with shrubs and other perennials for low maintenance color. Native to moist meadows, but due to their adaptable nature, Siberian Iris can be used in borders, rain gardens, or in moist riparian buffers around ponds or water features. An herbaceous perennial.
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Full sun

Water regularly - weekly, or more often in extreme heat or containers.


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Botanical PronunciationEYE-riss si-BIR-i-ka
LoreThe iris flower is the inspiration for the French national symbol, the fleur-de-lis. The genus Iris was named after the mythical goddess of the rainbow due to the huge range of flower colors.
Average Size at MaturityFast growing; foliage reaches 2 ft. tall, flowers rise above foliage.
Bloom TimeSpring
Design IdeasBlue is an elusive color among perennials and this Iris is a great reliable source. Plant in traditional flower beds for seasonal accent and blade-like foliage for vertical contrast. Use to simulate water Iris in dry streambeds or cluster around landscape boulders or rock outcroppings where soils are thin. Try as an attractive solution in damp spots. A natural around pools, ponds and water gardens. Even works well in the woodland garden or mixed into wild meadow grasses studded with wildflowers. When combined with contrasting foliage plants, may also be used as a blooming reed in antique ceramic pots and urns.
Deciduous/ EvergreenHerbaceous
Flower AttributeFlowers for Cutting, Showy Flowers
Flower ColorBlue
Foliage ColorGreen
Garden StyleAsian/Zen, Contemporary, Cottage, Rustic
Growth HabitClumping
Growth RateFast
Landscape UseBorder, Container, Mass Planting, Very Wet Areas, Water Garden, Woodland Garden, Cutting Garden
Light NeedsFull sun
Soil NeedsFlower & Rose Food
Special FeatureClump Forming, Easy Care, Extreme Cold Hardiness, Tolerates Wet Soils, Fast Growing
Water NeedsModerate
Watering NeedsWater regularly - weekly, or more often in extreme heat or containers.
Companion PlantsConeflower (Echinacea); Turtlehead (Chelone); Daylily (Hemerocallis); Bee Balm (Monarda); Spiderwort (Tradescantia)

Easy and adaptable; thrives in enriched, neutral to slightly acidic, well-drained soils. Water regularly until well-established. Once established, water regularly from spring through bloom period; reduce frequency after bloom period. Remove faded foliage as new leaves emerge. Divide every 4 to 5 years in fall.

This Plant's Growing Zones: 4-9

Your USDA Cold Hardiness Zone:

Your climate may be too cold for this plant