Wasteland vegetation

In the wastelands, nature takes over after human activity has dissipated from the place. Wasteland vegetation is formed by itself from the seed bank contained in the soil masses brought to the site. In addition, animals and the wind carry seeds to the area. Garden plant fugitives have also migrated to the area along with the open fields.
The so-called "plant species of every place", such as grass, hay, and meadow plants thrive in wastelands. Wastelands are an important part of urban nature, because traditional biotypes such as fields and meadows are endangered environments. Their species richness can be many times compared to managed green areas.

Herb ruin herb

Rohtorauniyo herb has been cultivated in Finland since the 1600th century, initially for medicinal use, later as an ornamental plant. The flowers can be blue-red or yellow-white. In the wetland park, the white-flowered sedge is most often found.

Saint Petersburg herb

St. John's wort is easy to recognize by its button-like flowers. The strong-smelling St. John's wort blooms yellow from the end of July to September. St. Peter's wort thrives on roadsides and wastelands, as long as the place of growth is dry and bright. The plant is useful near fruit trees: its aromatic scent repels aphids and other pests.

pujo

Pujo is a roadside and wasteland weed, which in late summer causes severe allergic symptoms in many people with its pollen. It is difficult to combat pujo, because the plant spreads effectively with the help of its rhizomes and can produce half a million seeds a year. In the past, pujo has been used as a herb and spice plant and even as an ornamental plant.

Field thistle

Field thistle is a common weed throughout southern Finland, but a pleasant plant especially for butterflies. Its plump tubercles are red and attract insects.

Widow magazine

The yellow flowers of the widow's leaf are familiar to everyone, but few people know how to associate the large summer leaves with the widow's leaf. Leskenlehti is a powerful spreader in wastelands.

Keto goose

Keto goose thrives in the gravel field bordering the wetland as a carpet, as do other wear-resistant species, such as piha saunio, piha tartar and piha ratamo. Keto gooseberry blooms in June-August. The underside of the leaves is covered with silver-white, shiny hair.

Alien species

Alien species have gained a foothold in the wetland. From the point of view of native nature, the worst escapees are the black rose, giant balsam, giant pipe and giant burdock, which are classified as harmful alien species. The last two have not yet been found in Kosteikkopuisto.

Wild lupine, brought to Finland as an ornamental plant, grows in some places, although lupine plants have been limited. Giant balsam has been plucked from a wetland. In its place, a lake sedge, one of Finland's natural plants, has grown.
A harmful alien species, the Spanish reed, has spread to the wetland park, where it has found a suitable environment.