Siberian Flag (Iris sibirica)
| Size | 1 Ltr, 1 Ltr – Pack of 3, 3 Ltr, 9cm – Pack of 3 |
|---|---|
| Plant Type | Marginal |
| Sun / Shade | Full Sun to Part Shade |
| Flower Colour | Blue |
| Growth Rate | Slow |
| Native to UK | No |
| Plant group |
A graceful hardy iris with elegant blue violet flowers and slender foliage, perfect for pond margins, bog gardens, and damp borders.
Price range: £14.00 through £34.50 (inc VAT)
Siberian Flag | Iris sibirica
Elegant blue flowering iris for pond margins, bog gardens, and damp borders
Iris sibirica, commonly known as Siberian Flag or Siberian Iris, is a graceful and reliable perennial that brings refined colour and structure to pondside planting schemes. Loved for its elegant blue to violet flowers and slender upright foliage, this hardy iris is perfect for bog gardens, damp borders, wildlife ponds, and naturalistic planting areas.
Flowering from late spring into early summer, Siberian Flag produces beautifully shaped blooms that appear to float above its narrow green foliage. The flowers have a delicate, lightly ruffled appearance and create a soft yet striking display around ponds and wet garden areas. Their vivid blue violet colouring contrasts beautifully against surrounding greenery and pairs exceptionally well with other marginal plants and waterlilies.
One of the biggest advantages of Iris sibirica is its versatility. Unlike some water loving irises that require constant wet conditions, Siberian Flag thrives in moist soil but can also tolerate slightly drier conditions once established. This makes it ideal for planting around pond edges, in bog gardens, or within mixed perennial borders where moisture levels may fluctuate throughout the year.
Its upright, sword like foliage adds strong vertical structure even after flowering has finished, helping maintain interest throughout the growing season. Over time, the plant forms neat clumps that gradually expand, making it an excellent choice for creating natural drifts or structured groups around ponds and water features.
Siberian Flag is also highly valuable for wildlife friendly gardens. The flowers attract pollinators such as bees and hoverflies, while the dense foliage provides shelter for amphibians and beneficial insects. Extremely hardy, this iris performs exceptionally well in UK gardens and is capable of tolerating severe winter temperatures without issue.
Whether you are designing a formal water garden, a wildlife pond, or a damp cottage garden border, Iris sibirica provides long lasting elegance, reliable performance, and beautiful seasonal colour. Its combination of graceful flowers, architectural foliage, and low maintenance care make it one of the most popular irises for pondside planting.
🇬🇧 UK-grown aquatic plant: Grown at a dedicated aquatic plant nursery in the South of England and carefully prepared for delivery across the UK.
Key Benefits
- Elegant blue violet flowers from late spring into summer
- Adds vertical structure and movement to pond edges
- Perfect for bog gardens and damp borders
- Attracts pollinators including bees and hoverflies
- Extremely hardy and reliable in UK conditions
- Suitable for both formal and natural planting schemes
Reasons to Buy
- Long lasting and low maintenance perennial
- Beautiful upright foliage provides season long interest
- Ideal for wildlife friendly ponds and gardens
- Tolerates colder climates exceptionally well
- Versatile enough for damp borders and pond margins
Care Instructions
- Plant in moist soil or on boggy pond edges where the roots remain consistently damp.
- Position in full sun or partial shade for the best flowering performance.
- Water regularly during dry periods, especially during establishment.
- Cut back old foliage in autumn or early spring before fresh growth emerges.
- Divide mature clumps every few years to encourage vigorous flowering and healthy growth.
Flowering Period
May to July
Size and Growing Conditions
Botanical Name: Iris sibirica
Common Name: Siberian Flag
Plant Type: Marginal
Flower Colour: Blue
Height: 60cm to 90cm
Spread: up to 60 cm
Growth Rate: Slow
Position: Full sun to part shade
Soil: Moist to wet, ideal for pond margins and damp borders
Native to the UK: No
Dispatching Your Pond Plants
Your Siberian Flag will be carefully packed to protect the foliage and roots during transit.
Orders received by 11am Monday to Wednesday are normally dispatched on the following working day using a next working day courier service. During busy periods, dispatch may occasionally take an extra day.
To avoid plants being held in depots over a weekend, we do not usually dispatch on Fridays. Highlands and Islands orders using a two day service are not normally dispatched on Thursdays.
Available basket sizes:
- Pack of 3 × 9cm Pots
- 1 Litre Basket – usually 11 × 11 × 11cm square; some varieties may be supplied in a 14cm diameter × 10cm round basket
- Pack of 3 × 1 Litre Baskets – each usually 11 × 11 × 11cm square
- 3 Litre Hexagonal Basket – 18 × 18 × 16cm
Planting depth is measured from the top of the aquatic basket to the water surface.
Plants supplied in 9cm pots require potting into suitable aquatic baskets before being placed in the pond.
Finofil baskets are manufactured in the UK from 100% recycled plastic and are fully recyclable. Their fine dual-mesh construction helps retain aquatic soil while allowing water and nutrients to reach the roots. Basket shape may vary slightly depending on the plant and supplier availability.
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