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Alisma plantago-aquatica which is also known as Mad-dog weed or the Common Water- plantain is a perennial and a flowering plant.

Image of Alisma plantago-aquatica plant at Google

Alisma plantago-aquatica which is also known as Mad-dog weed or the Common Water-
plantain is a perennial and a flowering plant that can grow up to a height of 3feet (90cm) with a 2feet (60 cm) spread. This plant is native of Northern Hemisphere, in Europe, northern Asia, and North America.

It is found on mud or in fresh waters. It belongs to the family: Alismataceae and the genus: Alisma. This plant is mainly found in water and mud. This is basically a hairless plant that has a fibrous root and grows in shallow water. The leaves are basal and long stemmed. The leaves are about 15-30cm in length and the stem is triangular and can grow about 1m tall. The flowers are small and about 1 cm across. The flowers are white or pale pinkish white in color. They have a tendency to open in the afternoon. The flowers bloom from late spring into summer that is from June until August. The stalks are long so that they stand up tall above the water.

This plant is used as a Chinese medicinal herb to treat edema, diarrhea, strangury, vaginal discharge, dizziness, painful urination, seminal emission, night sweating, lumbar pain, renal calculus, cystitis, dysentery and epilepsy. It is both a diuretic and diaphoretic. The roots treat hydrophobia and rattlesnake bites. It is an anti-diabetic herb.

They are used as a cut and dried flower for flower arrangements.

Growing/Caring conditions for Alisma plantago-aquatica:
– This plant needs to be grown on the edge of a pond or slow-moving stream.
– It can grow in water that is about 6 inches deep.
– Plant them out in the spring as the ponds starts to warm up.
– Plant them in lattice pot or into the mud that is on the side of the pond.
– The plantain grows well in full sunlight.
– The plant does tolerate light shade but the shade affects its flowering.
– These plants can also be grown from seeds.
– Sow them in a cold frame.
– Sow the seed in a pot and place this pot in 1in (2.5cm) deep water to ensure wet soil.
– Transplant them out in late spring when the seedlings are large enough to handle.
– Divide the plants in spring or autumn into their permanent places.
– They can invasive and hence cut off the flower stems as the flowers fade.

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