Thermal treatment as a method of controlling Heracleum sosnowskyi.
Heracleum sosnowskyi is a dangerous invasive species. Control over its spread requires material, financial and labour resources. The article suggests thermal method of controlling Heracleum Sosnowskyi with hot (90-100°) water. The work was carried out from April to June at sites occupied by Heracleum sosnowskyi in the summer. Treatment with hot water leads to the death of seedlings at the time of treatment. Weekly treatment allows to prevent emergence of new seedlings up to late autumn. Lack of seedlings stops replenishment of the population with new plants of seed origin. Weekly thermal treatment of perennial plants results in cessation of the growth of new leaves and cessation of the development of generative shoot. It is necessary to develop a technical solution of thermal non-contact thickets treatment methods. Method of heat treatment of seedlings and perennial plants-perennial plants in early spring can be viewed as a complement to the system of measures of controlling Heracleum sosnowskyi.