Pape Nature Reserve
Rugosa rose (Rosa rugosa) was imported into Latvia as a decorative garden plant, as well as to prevent soil erosion in the sand dunes along the Baltic Sea, and along roads and roadways. In the areas where it is distributed, the Rugosa rose (otherwise known as the Japanese rose) threatens native species, especially the most sensitive coastal plants, by suppressing and overcoming them.
A shrub up to 2 m high with straight, sometimes deciduous trunks. Thick branches with many thorns and hairs. Thorns are straight, with hairs and between them there are many needle-type thorns. The leaves are folded, formed with 5-9 leaflets. The leaves are curly, with a jagged edge, the surface of the leaf is shiny and bare, the underside – covered in hairs.
The flowers are pinkish-purple, sometimes white 6–11,5 cm in diameter, growing separately or in bunches of 2–6. They are large and fragrant. Bloom from May to the end of autumn.
The fruit is large, 2–4 cm in diameter, round, flattened a bit at the end, usually a bare seed bud encased in a juicy, red-orange or bright orange mass.
Manner of introduction
Introduced as a decorative plant as well as for reducing soil erosion in sand dunes, along roadsides and railways.
Characteristics of growing conditions
Most often grows in sandy slopes, meadows, edges of forests, roadsides and in open spaces. Particularly dense and frequent in the Baltic Sea sand dunes.
Familiarize yourself with invasive species and submit your observataions to: “Invazīvo sugu pārvaldnieks”.
Source: “Invazīvo sugu pārvaldnieks”, Nature Conservation Agency