Beautiful ornamental plants from other continents represent one of the main pathways for the introduction of alien plant species into our environment. Some of them have the potential to become invasive – they grow aggressively, lack natural enemies, and often form dense stands that displace our native species. They spread into forests, along waterways, or onto agricultural land. Within the LIFE OrnamentalIAS project, we therefore focus not only on preventing the spread of ornamental alien plants into nature, but also on encouraging the planting of native seedlings.
Native plants are ecologically valuable and safe. They are fully adapted to our environment, pose no risk of invasiveness, and provide essential support for wildlife – from birds to numerous pollinators.
The spread of invasive species is particularly problematic when caused by improper disposal of green waste. Even a small piece of an invasive plant, discarded in the wrong place, can quickly take root and create a new hotspot that threatens biodiversity.
This is why we must ask ourselves an important question: What should we plant that is both beautiful and safe?
Winter is the perfect time to plan your garden, as the dormant nature provides a clear view of the landscape structure and enough time for thoughtful decisions. The best choice is to plant species that have been part of our environment for thousands of years. Instead of alien invasive species, we should choose proven, beautiful, and environmentally friendly varieties. Excellent examples include the the European Beech "Purpurea Tricolor" (Fagus sylvatica 'Purpurea Tricolor'), guelder rose (Viburnum opulus), wayfaring tree (Viburnum lantana), or Norway maple (Acer platanoides 'Globosum'). These native species are safe, versatile, and ecologically highly valuable – so we take no risks by planting them.
A key partner in the project, Arboretum Volčji Potok (AVP), plays an important role in selecting and cultivating native ornamental plants. Each year, they will grow 20 native ornamental trees for us. This year, they have cultivated common hawthorn (Crataegus monogyna), wild service tree (Sorbus torminalis), and Cornelian cherry (Cornus mas).
The wild service tree is native to Slovenia and naturally grows on sunny slopes, making it suitable for moderately warm locations in gardens and public green spaces. People appreciate it for its white spring blossoms and red-orange autumn foliage. During flowering, it provides an important food source for pollinators, and in autumn birds enjoy its softened fruits. The tree grows 10–15 metres tall.
Cornelian cherry naturally grows as a large shrub. It tolerates pruning very well, so it can be shaped into a clipped hedge that is sturdy and does not crack under the weight of snow. With some gardening skill, it can also be trained into a single-stem tree. Its main advantage is its high resistance to heat and drought, although young plants require regular watering during dry summers. The name “Cornelian cherry” comes from the color of its flowers, which cover the branches before leafing out. At the end of summer, it produces edible fruits known as cornelian cherries.
Common hawthorn is an excellent choice for an impenetrable hedge, whether free-growing or trimmed. In a nature-friendly garden, it attracts wildlife: insects feed on its flowers, and its nectar and pollen rank it among melliferous plants. Bird nests are safe among its thorny branches, and its softened fruits provide food for birds late in the year. With proper pruning, it can also be grown into a small tree. It thrives in both full sun and partial shade.
To reward our followers at the end of the year, we have prepared a special giveaway – the traditional [UGANKA LETA]. We are giving away 5 prizes, each including a native tree and gardening gloves – a practical combination for all gardening enthusiasts. The giveaway will start on 24 December on our official Facebook page, so don’t miss the chance to enrich your garden with a native tree.
As part of the project, we explored the market offer in our region and found that high-quality native seedlings are readily available. Among others, they can be found at the Štivan tree nursery and the Najdi garden centre. By planting native species and supporting local tree nurseries, we are building the foundation for a healthy, biodiverse future of our very special piece of the world.
The implementation of extensive nature conservation projects exceeds the financial capacity of the local community, therefore Notranjska Park regularly applies for projects with the possibility of co-financing by the European Union.
The implementation of large-scale conservation projects exceeds the financial capabilities of the local community, therefore Notranjska Park regularly applies for projects with the possibility of co-financing from the European Union.
