Pilot Site for the Control of Rugosa Rose
In this Natura 2000 site, invasive rugosa rose adversely affects primary and secondary dunes, including white dunes and grey dunes covered with herbaceous vegetation. It alters the natural vegetation of open dunes and reduces biodiversity, threatening native species characteristic of these habitats, including specially protected species. In Ziemupe Nature Reserve, rugosa rose suppresses populations of sea holly (Eryngium maritimum), an exceptionally rare native plant in Latvia, known for its distinctive appearance. The species has been recorded at only two locations in the country.
The work is being led by the project partner, Latvijas valsts meži (Latvian State Forests).
On 19 July 2023, a seminar was held for stakeholders and experts to discuss the planned work. Read more>>>
Excavation using hand tools – in areas where rugosa rose grows in medium-sized patches, including sites where the exceptionally rare and protected sea holly (Eryngium maritimum) is found.
Excavation using compact machinery – in areas where rugosa rose forms dense clumps covering larger, continuous areas.
Targeted burning – in areas where rugosa rose grows in smaller, less dense clumps or as isolated plants. A control method new to Latvia is being tested: supervised, controlled burning using a specially designed dome to contain the fire and enable individual clumps to be targeted.
Controlling rugosa rose is challenging because the plant has a deep root system that can extend several metres into the ground.
The effectiveness of control methods will be evaluated at the LatViaNature pilot sites, with the aim of developing science-based guidelines in 2027 for managing invasive alien species elsewhere in Latvia.
Visit www.invazivs.lv to learn more about rugosa rose, including its introduction pathways, impacts, control methods and distribution in Latvia. Here>>>