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Description
Plant invasions are now considered one of the main threats to biodiversity worldwide. Horticulture, especially botanical and castle gardens, is considered to be the main source of invasive plant species. Native ornamental plants make up a high percentage of the European flora. In the Czech Republic, 54 % of all plant species are of this type. Some of these taxa then spread uncontrollably into the wild and become dangerous and unwelcome aliens. Well-known examples are the hogweed, knotweeds or Himalayan balsam. In addition to the loss of biodiversity, invasive species also cause changes in nutrient and moisture conditions in natural ecosystems. Specially protected areas of nature, e.g. nature reserves or Natura 2000, are at risk. Invasive species also often contain toxic or allergenic substances that affect human health. The aspect of introducing new species into ornamental crops is not yet emphasized in horticultural practice in the Czech Republic - invasive species are still commercially widespread. Therefore, it is advisable to highlight the issue of cultivation and spread of invasive species and influence horticultural practice to favor species that do not exhibit invasive behavior. The project is inspired by campaigns in Australia and New Zealand (Plant/Grow me instead) and the UK (Be plant wise, Plant Alert) which motivate gardeners to change their attitude towards invasive species. Given the different environmental and social conditions in the Czech Republic, the campaign needs to be adapted to local conditions. A local range of species to be grown will be compiled, a list of safe alternatives will be compiled, safe alternatives will be planted, distributed and shown in plantations. The project will also include an educational campaign.