Heracleum sosnowskyi Manden is a perennial (biennial) monocarpic herbaceous plant that bears fruit once, and in 98–99% cases, dies after. Hogweed (Heracleum sosnowskyi) mericarp, outer side Figure 3 – Hogweed ( Heracleum sosnowskyi) mericarp, inner side Hogweed. Heracleum Sosnowskyi was discovered in and described as a separate species in by I. P. Mandenova. Its name is derived from the surname of a.

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Cultivation on experimental and other farms began soon after herackeum first trials. However, in parts of northern Russia, agricultural production continues to this day and this can be seen as a potential risk if introduced to areas where it has not been previously cultivated. The plant is reported to live up to 11 years when planted for biomass and silage production Satsiperova, Triclopyr has no effect on germinating grasses and is useful in controlling a range of broad-leaved species.

New Phytologist, 87 2: Flowers are organized in slightly convex compound umbels cm across. Other Heracleum species were tested in either monocultures or to make crosses with H.

Heracleum sosnowskyi (Sosnowsky’s hogweed)

Affected animals must be removed from the field temporarily. The stem is ridged and sparsely hairy with purple blotches. Prevention and Control Top of page H. Fragments of the monograph on the Caucasian hogweeds.

European and Mediterranean Plant Protection Organization.

[Sosnowsky’s hogweed – toxicology and threat to health].

Don’t need the entire report? Flowering occurs from June to August and flowers are insect pollinated, and visited by a wide range of insects, including sosjowskyi number of Hymenoptera, Diptera and Coleoptera.

Zawartosc olejku eterycznego w Heracleum Sosnowskyi Manden. Herba Polonica, 42 3: Impact of Heracleum mantegazzianum on invaded vegetation and human activities.


The plant’s fine hairs mean that merely touching it is enough. Biologicheskie osobennosti i kormovye dostoinstva borshchevika Sosnovskogo Heracleum sosnovskyi Manden. New records for the flora of Turkey and two new species from Anatolia.

Sosnowwkyi areas prone to invasion, management should be continued for as long as possible in a regular fashion, e. Journal of Plant Protection Research, 45 2: Enrichment of forest-grasslands with fodder plants. Outer petals are radiate, mm long.

Removal of umbels can be as effective as cutting the whole plant, but this control method often fails to prevent seed production due to the high regeneration potential. Collection of ornamental seed-heads followed by disposal on rubbish heaps can also contribute to accidental introduction to new areas EPPO, The Danish EPA’s assessment and approval of glyphosate.

Distribution heraclehm invasive non-native plant species in Latvia. Social Impact Top of page H.

Heracleum Sosnowskyi Manden.

Another useful method, which could be used to determine the distribution of these conspicuous aliens, is aerial photography during the flowering and early fruiting period from the second half of June to July; Nielsen et al. Generally, grazing promotes a dense sward of grazing-tolerant species and limits the amount of suitable ground in which seeds of Heracleum spp.

After about 24 hours, flushing or reddening of the skin erythema and excessive accumulation of fluid in the skin oedema appear, followed by an inflammatory reaction after three days.

In cases where more tall invasive Heracleum species occur in a territory of interest, distribution can be mapped together as distinguishing between the species requires specialist knowledge. Journal of Aquatic Plant Management, Original language of question: American Journal of Botany, Frequent cutting of the re-established grass sward is recommended, when the height of H.

Plants subjected to removal of flower heads can readily regenerate and produce new flowers and viable seeds of normal size that germinate well. Leaves are divided into segments and can reach up to 3 m in length. One or more of the features that are needed to show you the maps functionality are not available in the web browser that you are using.


If herbicides are to be applied it is strongly recommended that the plants are treated early in spring when they have reached a height of cm and access to the centre of the colony is still possible. Wrzesinska D; Wawrzyniak M, Activity of furanocoumarin complexes and fractions from Archangelica hedacleum Hoffm.

Euleia heraclei reported from the Moscow region Russia and Poland, noted as a potential control agent Lutynska, b ; Kabysh, ; Wrzesinska and Blazejewska, ; Wrzesinska, This page was last edited on 6 Octoberat During the control and eradication programmes monitoring is a useful tool to evaluate success of these programmes and direct efforts to sosnkwskyi areas. Actions will only be successful, if they are embedded in management plans integrated across different regional and local authorities Nielsen et al.

CS1 Lithuanian-language sources lt CS1 Russian-language sources sosowskyi CS1 uses Russian-language script ru Articles with ‘species’ microformats Wikipedia articles needing clarification from Herxcleum All articles with unsourced statements Articles with unsourced statements from October Rasins A; Fatare I, Generate a print friendly version containing only the sections you need. Forest and Landscape Denmark, 44 pp.

Dicotyledonae Summary of Invasiveness H. Recent molecular-genetic studies showed close genetic relationship between all three invasive species, particularly between H.