Kingdom of aquatic plants

Sarata

In the ponds of Kosteikkopuisto, six different species of sedges grow in pods, including sedge sedge, bottle sedge, gray sedge and cut sedge. Sedges resemble grasses, but their stems are three-pointed and knotless.

Järvikorte

Järvikorte has also gained a lot of foothold in the wetland, covering the pine trees in late summer, unless the path is mowed open. Järvikorte grows in shallow waters, is tall and common throughout the country.

Korpikaisla

Korpikaisla is a perennial, upright grass with a long and strongly branched rhizome and often gives rise to dense and extensive growths.

Track scraper

Common sedge usually grows in shallow water. Its flowers are 3-petalled, white or soft pink, and the leaves resemble the leaves of a railway station.

Mucus

The surface of the water is covered in many places by free-floating slimes with small leaves. They float in the air cavities under the leaves and reproduce with the help of shoot plates.

Bulrush

Osmankäami is Finland's prettiest tall aquatic plant. It thrives on muddy shores, ditches and water ditches. It can grow up to more than two meters in good conditions.

Many people call osmankää a cotton plant because of its peculiarly shaped pistils. One over 20 cm long dark brown cotton-like inflorescence develops at the top of the stem. During the flowering period in July, there is a yellow pistil as an extension of the thick pistil. A queen flower may have up to 100 small flowers tightly packed together. In winter, the brown fluff breaks up into a mass of down as the seeds fly into the environment.

Water thistle

Water hydrangea, almost the size of a man, is a rarity in the Peltosaari wetland park and at the same time one of the most spectacular plants. It is easy to recognize by the large, heart-shaped leaves. The scientific name of the plant is Rumex aquaticus. Water mistletoe does not grow as abundantly elsewhere in Riihimäki. Water hydrangea is rare in southern Finland, common in places further north.

Substances obtained from the rhizome of water mistletoe have previously been used to stop bleeding.

Yarrows are perennial grasses. The leaves die for the winter, but the brown flowering stem remains for the winter to shrivel up in the wind and spread the seeds with the wind. The plant therefore belongs to the winter dormant ones.

Vehka

Vehka is a showy wetland plant with its large white flowers and heart-shaped leaves. After flowering, the inflorescence in the fruit stage resembles a red cone.

The flower's white shimmering bract perhaps attracts pollinators together with the weak and unpleasant smell of the flowers. Vehka is poisonous in all its parts. Its seeds float well and it also spreads by means of rhizome pieces and torn parts of raft growths in water, especially during flood seasons.

Poison lord

Myrkkykeiso is the most poisonous plant in Finland, along with poison ivy. The plant is deceptive in that it resembles other common tube plants such as daisies and bearberry with its white series of flowers.

The poison ivy is best recognized by the leaves and where it grows. Poison ivy often grows in shallow waters on the shores. In the Peltosaari wetland park, poison ivy grows in places along the longwood section.