Iris 'Caesar's Brother'
"Siberian iris"
Orders placed until 29 February 2025
You can expect your order in February/March 2025
Orders placed 1 March - 15 April 2025
You can expect your order in March/April 2025
Orders placed 16 April - 15 May 2025
You can expect your order within 10 business days
UK orders over £50
Free shipping
UK orders under £50
£4.99
Northern Ireland orders under £50
£5.99
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Description
This utterly stunning Siberian iris or Siberian flag is a clump-forming plant. In June and July its intense violet-blue flowers appear, each one speckled and striped on the throat with white and golden yellow. The blooms stand out from the mass of bright green, strap-like leaves. It is a variety that is slightly taller than most. Growing from a rhizome (similar to a bulb), Iris sibirica 'Caesar's Brother' prefers a moist, neutral to slightly acid soil in sun or partial shade. It looks best planted in bold drifts beside water, and then left alone to naturalise. It is particularly useful on difficult banks, where it will help to prevent soil erosion.
Iris sibirica 'Caesar's Brother' needs space to spread out as, over time, it will form into a large clump. If you have a pond, this iris can also be planted in an aquatic pot and set in the water, as a marginal plant. Siberian flag irises are easy, trouble-free, sturdy and upright, and seldom troubled by insect pests.
Key features
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Good for cutting
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Perfect for pots
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Comes back every year
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Loved by pollinators
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Naturalising
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Thrives well in full sun
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In peat-free compost
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Low maintenance
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Fully hardy
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Rodent resistant
Specs & details
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Botanical name
Iris sibirica 'Caesar's Brother' (Sib)
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Flower colour
Blue
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Plant size
1
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Established height
70cm-1m
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Established spread
50-70cm
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Plant spacing
10 plants per m2
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Leaf colour
Green
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Habit
Upright
Clump-forming -
Life cycle
Perennial
Naturalising -
Hardiness
Fully hardy
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Years to establish
1-2 years
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Sunlight
Full sun
Partial shade -
Position
Sheltered
Exposed -
Suitable for
Pots
Large containers
Borders
Meadows
Water gardens
Coastal gardens
Low maintenance gardens
Cut flower gardens -
Soil acidity
Any
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Soil moisture
Damp
Boggy -
Soil type
Loam
Sandy
Clay
Loam-based compost
Multipurpose compost -
Growing skill
Easy to grow
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Scented
No
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Pollinator-friendly
No
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Mouse resistant
Yes
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Rabbit resistant
Yes
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Deer resistant
No
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Toxicity
Skin/eyes irritant
Harmful if eaten
Plant calendar
| Jan | Feb | Mar | Apr | May | June | July | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
- Planting
- Flowering
Useful information
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Soak the Iris 'Caesar's Brother' roots in water for 3-6 hours prior to planting
Plant your "Siberian iris" bare roots into temporary pots with a multipurpose compost in spring and grow-on in a sheltered spot outdoors
Choose a pot which comfortably fits the bare roots. Some have a noticeable crown which should be just below the soil surface with any top growth exposed. Some varieties are a length of root which should be planted lengthways and shallowly (1-2cm deep).
Plant out into borders or permanent containers in late spring or early summer once in full growth. Choose a position in sun or shade depending on the variety.
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Orders placed until 29 February 2025
You can expect your order in February/March 2025Orders placed 1 March - 15 April 2025
You can expect your order in March/April 2025Orders placed 16 April - 15 May 2025
You can expect your order within 10 business days
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