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IRIS sibirica 'Perry's Blue'
Commonly known as Siberian flag
Pale blue
Plant Details
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Floweringlocal_floristJanlocal_floristFeblocal_floristMarlocal_floristAprlocal_floristMaylocal_floristJunlocal_floristJullocal_floristAuglocal_floristSeplocal_floristOctlocal_floristNovlocal_floristDec
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Good to knowBeardless Siberian iris
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Pests & DiseasesSlugs, snails, thrips, grey mould(Botrytis)
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Place of originCentral and eastern Europe, northeastern Turkey, Russia. Garden origin.
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DeciduousUsually. Grey-green, narrow, grass-like leaves to 45cm (18in) long
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BlueWith white and yellow markings. Dark-blue veins on the falls.
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Fully hardy
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Height60-90cm (24-36in)
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Spread10-50cm (4-20in)
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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 hardyHardy in the severest continental climates including exposed upland locations in the UK. Plant can withstand temperatures < -20 (-4°F)
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Summer Seasonal Interest
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harmful if eatenPeople and pets, i.e. cats, dogs, rabbits, rodents
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skin irritantPeople
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Rabbit Resistant
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Mature Size60-90cm (24-36in)
10-50cm (4-20in)
Planting Tips and Care Advice
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Garden Location/Conditions
Cottage gardenTown garden
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Soil Conditions
Fertile moist well-drained soilModerately fertile. Will tolerate moist, but not waterlogged, soil.Neutral to acid soilNeutral to slightly acid
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Sun Requirements
Full sunPartial shade
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Iris - Growing Guide