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IRIS sibirica 'Blue King'
Commonly known as Siberian flag
Clear blue
Full Plant Details - Sun/Soil & other attributes - Click to close
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Floweringlocal_floristJanlocal_floristFeblocal_floristMarlocal_floristAprlocal_floristMaylocal_floristJunlocal_floristJullocal_floristAuglocal_floristSeplocal_floristOctlocal_floristNovlocal_floristDec
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Good to know
Beardless Siberian iris -
Pests & Diseases
Slugs, snails, thrips, viral infections, grey mould(Botrytis) -
Place of origin
Central and eastern Europe, northeastern Turkey, Russia. Garden origin. -
DeciduousUsually. Narrow, grass-like leaves to 45cm (18in) long
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Blue
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Cottage garden
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Town garden
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Fully hardy
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Height
To 1.2m (4ft) -
Spread
10-50cm (4-20in) -
Bulb/Corm or rhizomatous perennialClump-forming, rhizomatous perennial. Each branched stem produces up to 5 flowers to 7cm (2¾in) across
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HerbaceousEarly in the year, typically January till end of March, herbaceous plants might be supplied in 9cm pots to ensure timely despatch.
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Very hardy
Hardy in the severest continental climates including exposed upland locations in the UK. Plant can withstand temperatures < -20 (-4°F) -
Summer Seasonal Interest
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Fertile moist well-drained soilModerately fertile. Humus-rich. Will tolerate moist, but not waterlogged, soil
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Neutral to acid soilNeutral to slightly acid
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Full sun
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Partial shade
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harmful if eaten
People and pets, i.e. cats, dogs, rabbits, rodents -
skin irritant
People -
Rabbit Resistant
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Mature Sizeto 1.2m (4ft)
10-50cm (4-20in)
View Detailed Plant Description
View Planting Tips and Care Advice
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Iris - Growing Guide