Iris pseudacorus (Marginal Aquatic)Yellow Flag

Hardy Perennial

What is Hardy Perennial?
A plant that lives for more than two years.
Capable of withstanding outdoor winter temperatures down to -15C.

FROM £14.99

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Please note: This product cannot be delivered outside the United Kingdom.
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Height Up to 100cm (39.4in)
Spread Up to 30cm (11.8in)

Hardy Perennial

cottage gardenswater garden

Sun or semi shade

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Flowering Months

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Description
Iris pseudacorus is our only British native water Iris. This tall hardy perennial is a spectacular sight as it emerges from the water’s surface, casting elegant reflections. The bright yellow blooms appear in early summer, attracting an abundance of pollinating insects. With its strap-like foliage and tall flower stems, Yellow Flag adds a strong vertical element to planting schemes in damp borders and boggy pond margins. Height: 100cm (39"). Spread: 30cm (12"). Planting depth: Zones 1, 2 & 3 to 20cm (8") below water level.

Plant height and spread is seasonal therefore we list by pot size rather than a defined plant size. The height and spread of the plant delivered will vary depending on the season, meaning arrival images are an indication only.


3 x 9cm potted iris plants (78217)
1 x 9cm potted iris plant (78216)
1 x 3 litre potted iris plant (78215)
3 x 1 litre potted iris plants (78214)
1 x 1 litre potted iris plant (78035)

How to Grow
Iris pseudacorus plants thrive in damp, acid or neutral soil in a sunny or semi-shaded position. These moisture loving Iris require a rich, fertile soil which has had plenty of well rotted organic matter added into the soil prior to planting. Grow Iris pseudacorus in moist, boggy soils or submerged in the shallow margins of ponds with the crown to a maximum depth of up to 20cm (8") below water level. Choose a position in sun or semi shade.
More Info
When grown in damp borders, Iris pseudoacorus require reliably moist soil. Water if necessary during dry periods to prevent the soil from drying out. Overcrowded clumps of Iris plants can be divided in autumn after flowering. Mulch around the base of Iris pseudoacorus in spring to help retain moisture at their roots. Iris that are grown in ponds may be cut back to just above the water surface in autumn.
Delivery

Seeds and garden supplies will normally be delivered within the time period stated against each product as detailed above. Plants, bulbs, corms, tubers, shrubs, trees, potatoes, etc. are delivered at the appropriate time for planting or potting on. Delivery times will be stated on the product page above, or in your order acknowledgement page and email.

Orders for packets of seed incur a delivery charge of £2.99.

Orders which include any other products will incur a delivery charge of £4.99.

Where an order includes both packets of seeds and other products, a maximum delivery charge of £6.99 will apply - regardless of the number of items ordered.

Large items may incur a higher delivery charge - this will be displayed in your shopping basket.

Please see our Delivery page for further details, and more information on different charges that may apply to certain destinations.

For more information on how we send your plants please visit our Helpful Guide on plant sizes.

Thompson & Morgan strives to ensure that all its plants are delivered to you in the perfect condition for planting. Sadly, the time it takes to deliver to certain locations in the UK means that we can't guarantee this, so regretfully we are unable to ship live plants to the following areas: HS, IV41-IV49, IV51, IV55-56, KW15-KW17, PA34, PA41-48, PA60-PA78, PA80, PH40-PH44, TR21-TR24, ZE1-ZE3

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