Iris pseudacorus
Water iris, Yellow iris, Yellow flag, Water flag, False iris
- Height × spread
- 0.8m × 0.3m
- Position
- Full sun
- Hardiness
- Colder than -20C (RHS H7)
- Flowers
- Spring, Summer
Availability
Please ask in store about availability
Many plants are seasonal. Call 01234 567890 to check current stock.
About this plant
This has strap-like, mid-green leaves that can go well over 1m (3ft) high in watery conditions and yellow blossoms with black markings. It is a familiar plant of river and marsh throughout Britain and Ireland. This may be the original fleur-de-lis, although it is not certain whether the heraldic fleur de luce, used by Louis VII as his blazon at the time of the Crusades was derived from the iris or the lily. There are a number of cultivars.
- Flower colour
- Yellow
- Foliage colour
- Green
- Variegated
- No
- Scent
- Yes, sweet
- Shape
- Column
- Height
- 0.8m
- Spread
- 0.3m
- Season of interest
- Spring, Summer
- Flowers in
- Spring, Summer
- Evergreen
- Evergreen
- Garden style
- Water garden, Seaside garden, Scented garden, Cottage garden
- Sun or shade
- Likes full sun
- Soil type
- Clay, Loam (normal)
- Soil pH
- All types
- Drainage
- Moisture retentive soil
- Hardiness
- Colder than -20C (RHS H7)
- Borders & containers
- Borders
- Water depth
- Up to 15cm
- Use for
- Rabbit resistant, Butterfly attraction
- Maintenance
- Easycare – low/no maintenance
- Hazards
- Yes, potentially harmful; Humans: Harmful if eaten
Spring
Spring · Outdoors
Feed with aquatic plant food
As the plant is grown in water, feed with an aquatic feed as directed on the packet. Do not exceed the amounts given as this can affect the water.
Spring - late · Outdoors
Feed with slow release fertiliser
Apply a general purpose slow release fertiliser, spreading it around the root area of the plant as it is coming into growth. (Or apply a liquid feed at regular intervals throughout the growing season.)
This is a simple way to provide a nutrient boost as a single annual procedure.
Spring-Autumn · Outdoors
Water frequently to keep the soil moist
The plant thrives in moist or boggy soil, doesn't tolerate dryness and should be watered frequently, not only after a period of drought, but if the soil begins to dry out spring to autumn. Check plants in pots more frequently, especially in hot weather.
Found in
More Iris
Iris
Iris laevigata
Smooth iris, Asiatic swamp iris, Rabbit ear iris
Iris pseudacorus 'Variegata'
Water iris, Yellow iris, Yellow flag, Water flag, False iris
Iris 'Action Front'
Tall bearded iris
Iris 'Actress'
Tall bearded iris
Iris 'Arctic Fancy'
Tall bearded iris
Iris 'Au Sommet'
Tall bearded iris
Iris 'Black Swan'
Tall bearded iris