Photos

  • Album cover: Other Invasive Species

    Other Invasive Species

  • Album cover: Landscaping Solutions to Japanese Knotweed

    Landscaping Solutions to Japanese Knotweed

  • Album cover: Japanese Knotweed and its close relatives

    Japanese Knotweed and its close relatives

Smaller hogweed plants identified at a site in North London
Giant Hogweed, identified by its large flowerheads and spikey leaf edges is an injurious plant native to Russia and Georgia. Contact with its sap and direct sunlight causes severe burn-like injuries.
Large area of Giant Hogweed treated.
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Poison Hemlock, another injurious plant present in the UK is potentially fatal to humans and to wildlife. Both the growing and cut dried plant are poisonous. Hemlock spreads rapidly via seed head.
Close up view showing the seed heads of poison hemlock. During the Summer the seeds will drop and can spread through the wind, remaining potentially viable for regrowth for multiple years.