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Rieger's Path

Invasive plants

Almost along the Rieger's path, near the river there we see a whole stands of invasive plants, called Himalayan balsam (Impatiens glandulifera).

It is an annual plant which germinate late growing rapidly and has a huge root system. Individual plants can reach a height of up to 3 meters. Plant pleasantly scented fruit. It blooms in August-October. It comes from the Himalayas, where it grows to heights of up to 3,000 meters above sea level. We are tied to aquatic habitats. The fruit is a capsule bursting seeds shooting up to a distance of 4 m

One plant can produce up to 5,000 seeds. Retains its seed germination up to 6 years. The seeds are sticky, and thus can range to waterfowl feathers and hair of certain animals. Dangers that the plant poses, involves considerable ability to quickly populate new habitats. This creates a monoculture, mostly very difficult to permeable vegetation that reduce species diversity and landscape significantly changes its natural composition. Shallow roots impatiens glandular protect the soil against erosion. Dense stands of impatiens that can effectively suppress native vegetation of coastal plants, significantly contribute to water erosion. When plants succumb frosts leaving banks exposed and you are without a protective vegetation cover easily taken away the water current. To maintain the original species is necessary to the growth and spread of impatiens suppress.

For the suppression of invasive species is apparently much needed education so that conservation efforts were not only a few experts, but things the general public. It is important to prevent netýkavce in mature seeds. Interventions must be carried out during the month of August before semination. Because Himalayan balsam found on specially protected areas, it is not possible chemical spraying, and so there are only mechanical interventions. Continuous growth impatiens on larger areas can mow brush cutter. When a local presence is necessary to pluck plant and preferably hung on the branches of the trees, as if you toss on the ground and from each nodes can grow again. The branch will soon dry.

Himalayan Balsam (Impatiens glandulifera)

GPS position

N 50° 36.894', E 15° 18.868'



Geopark UNESCO Český ráj
Jiří Vlasák