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Alisma lanceolatum (Narrow-leaved water plantain )

Beginner
skill rating
2 hours care
per year
0.7m
Max height
0.25m
Max spread
5-10 years
To maturity

Plant details

Botanical name

Alisma lanceolatum

Other names

Narrow-leaved water plantain

Genus

Alisma Alisma

Species

A. lanceolatum - A. lanceolatum is a rhizomatous, deciduous, aquatic perennial with lance-shaped, blue-green leaves and tall, whorled, panicles of purple-pink flowers in summer.


Alisma lanceolatum is: Deciduous

Habit

Erect flower stem, Spreading

Flower

Purplish-pink in Summer

Foliage

Blue-green in Spring; Blue-green in Summer; Blue-green in Autumn

How to care

Watch out for

Pests

Can get false leaf-mining midge.

Diseases

Algae might smother foliage.

General care

Pruning

Deadhead regularly to prevent self-seeding.

Propagation

Sow seed as soon as ripe in trays or pots half submerged in shallow trays or water. Divide tuber-like rhizomes in late spring. Detach rooted plantlets.

Propagation methods

Division, Root plantlets, Seed


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Where to grow

Alisma lanceolatum (Narrow-leaved water plantain ) will reach a height of 0.7m and a spread of 0.25m after 5-10 years.

Suggested uses

Aquatic, Cottage/Informal, Wildlife

Cultivation

Grows best in water 15cm deep in full sun. Will tolerate depths up to 30cm. May become invasive so plant in baskets in loam to prevent spread. Not suitable for small ponds.

Soil type

Clay, Loamy, Sandy

Soil drainage

Boggy damp conditions, Pond/In water

Soil pH

Acid, Alkaline, Neutral

Light

Full Sun

Aspect

North, South, East, West

Exposure

Exposed, Sheltered

UK hardiness Note: We are working to update our ratings. Thanks for your patience.

Hardy (H4)

Companion plants

We do not currently have companion plants added for this plant.

Botanical name

Alisma lanceolatum

Other names

Narrow-leaved water plantain

Genus

Alisma Alisma

Species

A. lanceolatum - A. lanceolatum is a rhizomatous, deciduous, aquatic perennial with lance-shaped, blue-green leaves and tall, whorled, panicles of purple-pink flowers in summer.

Foliage

Deciduous

Habit

Erect flower stem, Spreading


Colour

Flower

Purplish-pink in Summer

Foliage

Blue-green in Spring; Blue-green in Summer; Blue-green in Autumn


How to care

Watch out for

Pests

Can get false leaf-mining midge.

Diseases

Algae might smother foliage.

General care

Pruning

Deadhead regularly to prevent self-seeding.

Propagation

Sow seed as soon as ripe in trays or pots half submerged in shallow trays or water. Divide tuber-like rhizomes in late spring. Detach rooted plantlets.

Propagation methods

Division, Root plantlets, Seed


Monthly care advice


Where to grow

Alisma lanceolatum (Narrow-leaved water plantain ) will reach a height of 0.7m and a spread of 0.25m after 5-10 years.

Suggested uses

Aquatic, Cottage/Informal, Wildlife

Cultivation

Grows best in water 15cm deep in full sun. Will tolerate depths up to 30cm. May become invasive so plant in baskets in loam to prevent spread. Not suitable for small ponds.

Soil type

Clay, Loamy, Sandy

Soil drainage

Boggy damp conditions, Pond/In water

Soil pH

Acid, Alkaline, Neutral

Light

Full Sun

Aspect

North, South, East, West

Exposure

Exposed, Sheltered

UK hardiness Note: We are working to update our ratings. Thanks for your patience.

Hardy (H4)

USDA zones

Zone 8, Zone 7, Zone 6, Zone 5

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This plant likes... Garden match
Soil types: Clay, Loamy, Sandy Tell us...
Soil drainage: Boggy damp conditions, Pond/In water Tell us...
Soil pH: Acid, Alkaline, Neutral Tell us...
Light: Full Sun Tell us...
Aspect: North, South, East, West Tell us...
Exposure: Exposed, Sheltered Tell us...
Hardiness: Hardy (H4) Tell us...

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