Water Plantain
Alisma plantago-aquatica

Family: Alismataceae
Genus: Alisma (uh-LISS-muh) (Info)
Species: plantago-aquatica (plan-TA-go a-KWA-tee-kuh) (Info)

Category:

Perennials

Ponds and Aquatics

Height:

36-48 in. (90-120 cm)

4-6 ft. (1.2-1.8 m)

Spacing:

9-12 in. (22-30 cm)

Hardiness:

USDA Zone 5a: to -28.8 C (-20 F)

USDA Zone 5b: to -26.1 C (-15 F)

USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

Sun Exposure:

Partial to Full Shade

Danger:

Parts of plant are poisonous if ingested

Bloom Color:

White/Near White

Bloom Time:

Mid Summer

Foliage:

Deciduous

Silver/Gray

Other details:

Requires consistently moist soil; do not let dry out between waterings

Very high moisture needs; suitable for bogs and water gardens

Soil pH requirements:

5.6 to 6.0 (acidic)

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

Patent Information:

Unknown - Tell us

Propagation Methods:

By dividing rhizomes, tubers, corms or bulbs (including offsets)

From seed; winter sow in vented containers, coldframe or unheated greenhouse

From seed; stratify if sowing indoors

Seed Collecting:

Allow pods to dry on plant; break open to collect seeds

Gardeners' Notes:

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Positive

On Feb 11, 2005, melody from Benton, KY (Zone 7a) wrote:

A tall spindly plant with basal leaves and a flower stalk with small white or pinkish flowers in umble-like clusters.

It is found in shallow, marshy sites throughout north America.

The submerged, fleshy part of several species were dried and eaten by Native Americans.