Nick Upton / Harvest mouse (Micromys minutus) cleaning its nose on Common hogweed (Heracleum sphondylium) flowerhead after release, Moulton, Northampton, UK, June.

Nick Upton / Juvenile Goldenrod spider (Misumena vatia) camouflaged on a Common hogweed (Heracleum sphondylium) flowerhead, reacting to and catching a fly (Muscidae), Wiltshire, England, UK, June.

Nick Upton / Male Thick-legged flower beetle (Oedemera nobilis), with a Pyramidal orchid (Anacamptis pyramidalis) pollinium attached to its head, nectaring on Common hogweed flowers (Heracleum sphondylium), Wiltsh...

Nick Upton / Harvest mouse (Micromys minutus) on Common hogweed (Heracleum sphondylium) flowerhead after release, Moulton, Northampton, UK, June.

Nick Upton / Harvest mouse (Micromys minutus) on Common hogweed (Heracleum sphondylium) flowerhead after release, Moulton, Northampton, UK, June.

Niall Benvie,Niall Benvie / Hogweed (Heracleum sphondylium) flower head against white background. Scotland, UK, August.

Nick Upton / Head-on view of a Goldenrod crab spider (Misumena vatia) juvenile well camouflaged on a Common hogweed (Heracleum sphondylium) flowerhead, Wiltshire, UK, June.

Nick Upton / Male Thick-legged flower beetle (Oedemera nobilis), with a Pyramidal orchid (Anacamptis pyramidalis) pollinium attached to its head, nectaring on Common hogweed flowers (Heracleum sphondylium), Wiltsh...

Nick Upton / Juvenile Goldenrod spider (Misumena vatia) camouflaged on a Common hogweed (Heracleum sphondylium) flowerhead, feeding on a small fly (Muscidae) it has caught, Wiltshire, England, UK, June.

Nick Upton / Juvenile Goldenrod spider (Misumena vatia) camouflaged on a Common hogweed (Heracleum sphondylium) flowerhead, reacting to a nearby fly (Muscidae), Wiltshire, England, UK, June.

Nick Upton / Juvenile Goldenrod spider (Misumena vatia) camouflaged on a Common hogweed (Heracleum sphondylium) flowerhead, reacting to a nearby fly (Muscidae), Wiltshire, England, UK, June.

Nick Upton / Juvenile Goldenrod spider (Misumena vatia) camouflaged on a Common hogweed (Heracleum sphondylium) flowerhead, reacting to a nearby fly (Muscidae) and a Thick-legged flower beetle (Oedemera nobilis),...

Sven Zacek / Whinchat (Saxicola rubetra) singing in meadow, silhouetted by sunrise. Karula Naitonal Park, Valgamaa, Southern Estonia. June.

Andy Sands / Hoverfly (Chrysotoxum bicinctum) distinctive black and yellow hoverfly visiting Wild Parsnip flower, Buckinghamshire, England, UK, July

Andy Sands / Hoverfly (Chrysotoxum bicinctum) distinctive black and yellow hoverfly visiting Wild Parsnip flower, Buckinghamshire, England, UK, July

Philippe Clement / Parasite fly / tachinid fly (Tachina fera) feeding on nectar from Hogweed (Heracleum sphondylium) in summer, France. August.

Kerstin Hinze / Northern birch mouse (Sicista betulina) climbing in Umbellifer (Heracleum sp). Bavarian Forest National Park, Bavaria, Germany. August. Captive.

Kerstin Hinze / Northern birch mouse (Sicista betulina) resting amongst Umbellifer (Heracleum sp) and Docks (Rumex sp). Bavarian Forest National Park, Bavaria, Germany. August. Captive.

Nick Upton / Downland villa bee fly (Villa cingulata) feeding on Common hogweed (Heracleum sphondylium) flowers, Wiltshire, UK, July, Locally Endangered species.

Nick Upton / Dark-winged fungus gnat (Sciara hemerobioides) feeding on Common hogweed flowers (Heracleum sphondylium)Wiltshire, UK, July.

Kim Taylor / Hogweed (Heracleum sphondylium) flowers. Surrey, England, UK, November.

Kim Taylor / Soldier fly (Sargus species) on Hogweed (Heracleum sphondylium) flower. Surrey, England. Digital composite.

Kim Taylor / Hogweed (Heracleum sphondylium) flowers. Surrey, England

Christophe Courteau / Parsnips (Pastinaca sativa)

Nick Upton / Green / Broad centurion soldier fly (Chloromyia formosa) female nectaring on Common hogweed (Heracleum sphondylium) on hillside once used as a dumping ground, cleared of scrub to improve habitat for b...

Nick Upton / Parasite fly / Tachinid fly (Zophomyia temula), a nationally scarce species, feeding on Common hogweed (Heracleum sphondylium) on grassland meadow cleared of scrub to improve the habitat for bees and...

Nick Upton / Wasp-mimicking Hoverfly (Chrysotoxum festivum) nectaring on Common hogweed (Heracleum sphondylium) on hillside once used as a dumping ground, cleared of scrub to improve habitat for bees and other pol...

Nick Upton / Drone fly (Eristalis sp.) nectaring on Common hogweed (Heracleum sphondylium) on hillside once used as a dumping ground, cleared of scrub to improve habitat for bees and other pollinators for Buglife'...

Andy Sands / Tachnid fly (Phasia hemiptera) male feeding on flower of wild parsnip (pastinaca sativa), Oxfordshire, England, UK, August

Andy Sands / Hoverfly (Chrysogaster solstitalis) this hoverfly has extremely large eyes that are characteristic of the species, pictured on wild parsnip, Buckinghamshire, England, UK, July

Andy Sands / Sawfly (Tenthredo amoena) feeding on Red Soldier beetle (Rhagonycha fulva) on flower of wild parsnip (Pastinaca sativa), Oxfordshire, England, UK, July

Andy Sands / Tachnid fly (Phasia hemiptera) male feeding on flower of wild parsnip (Pastinaca sativa), Oxfordshire, England, UK, August

Nick Upton / Eurasian beaver (Castor fiber) mother and three of her kits eating stems and leaves of Common hogweed (Heracleum sphondylium) which she has cut. On the margins of the River Otter alongside the father,...

Nick Upton / Eurasian beaver (Castor fiber) mother dragging stems and leaves of Common hogweed (Heracleum sphondylium) to the margins of the River Otter for her kits to feed on near their lodge, Devon, UK, July. P...

David Pike / Wild parsnip (Pastinaca sativa) in flower, Green Down Nature Reserve, Somerset, England, UK, July.

Nick Upton / Harvest mouse (Micromys minutus) on Common hogweed (Heracleum sphondylium) flowerhead after release, Moulton, Northampton, UK, June.

Nick Upton / Harvest mouse (Micromys minutus) on Common hogweed (Heracleum sphondylium) flowerhead after release, Moulton, Northampton, UK, June. Winner of the Documentary Series of the BWPA (British Wildlife Phot...

Nick Upton / Harvest mouse (Micromys minutus) clinging to a Common hogweed (Heracleum sphondylium) flowerhead with its feet and tail after release, Moulton, Northampton, UK, June.

MYN / Marko Masterl / Austrian Hogweed (Heracleum austriacum subsp. siifolium) in flower, Slovenia, Europe, August. meetyourneighbours.net project

Ernie Janes / Hogweed (Heracleum sphondylium), UK, June.

Nick Upton / Common Hogweed (Heracleum sphondylium) umbel flowerhead in a woodland clearing, Gloucestershire, UK, July.

Ernie Janes / Giant Hogweed (Heraculum mantegazziamum) growing near the sea, with woman walking dog in distance, Norfolk, England, July 2013.

Nick Upton / Farmland meadow with flowering Common Hogweed (Heracleum sphondylium) and pastureland grazing for horses and sheep, arable crops, tree belts and the Ridgeway in the background, Marlborough Downs, Wilt...

Nick Upton / Farmland meadow with flowering Common Hogweed (Heracleum sphondylium) and pastureland grazing for horses and sheep, arable crops, tree belts and the Ridgeway in the background, Marlborough Downs, Wilt...

Gary K. Smith / Snow covered allotment with gardener digging up winter vegetables - Parsnips (Pastinaca sativa) and Leeks (Allium poorum) Norfolk, England, UK, December

Gary K. Smith / Winter root vegetables, including Parsnips (Pastinaca sativa) and Carrots (Daucus carota) harvested from under protective mesh after a fall of snow, Norfolk, UK, December

Nigel Cattlin / Hogweed (Heracleum sphondylium) plant white flowering umbels and flower buds, Berkshire, England, UK. June

Jack Dykinga / Cow parsnip (Heracleum lanatum) in flower with fog rising at sunrise over Absaroka Mountain range, Lamar Valley near Soda Butte Creek, Yellowstone National Park, Wyoming, USA.

Marie Read / Pacific wren (Troglodytes pacificus) Bering Sea race, male, perched on Cow parsnip (Heracleum maximum) singing, St. Paul, Pribilof Islands, Alaska, USA. July.

Will Watson / Musk beetle (Aromia moschata) resting on Cow Parsnip (Heracleum sphondylium), River Monnow, Monmouth, Wales, UK. July.

Jean E. Roche / Common hogweed (Heracleum sphondylium) flower heads. Provence-Alpes-Cotes-d'Azur, France. July.

Nick Upton / Stem sawfly (Hartigia xanthostoma), (Cephidae), a nationally rare species in the UK, feeding on Common hogweed (Heracleum sphondylium) flowers, Wiltshire, UK, June.

Nick Upton / Stem sawfly (Hartigia xanthostoma), (Cephidae), a nationally rare species in the UK, feeding on Common hogweed (Heracleum sphondylium) flowers, Wiltshire, UK, June.

Nick Upton / Common hogweed (Heracleum sphondylium) seedhead with striped, edible seeds, Somerset, UK. August.

Nigel Cattlin / Common hogweed (Heracleum sphondylium), white flower umbel and green unripe seed head, Berkshire, UK. July.

Nick Upton / Juvenile Raft spider (Dolomedes fimbriatus) on a small web spun on a Common hogweed (Heracleum sphondylium) seedhead, Catcott Lows National Nature Reserve, Somerset, UK. August.

Nigel Cattlin / Umbels of flowers of poisonous Giant hogweed (Heracleum mantegazzianum) plant against blue sky, Devon, England, UK, June.

Colin Varndell / Giant hogweed (Heracleum mantegazzianum) in bloom, Dorset, UK, June.

Nigel Cattlin / Umbels of flowers of poisonous and notifiable plant giant hogweed (Heracleum mantegazzianum) against blue sky, Devon, England, UK, June.

Nick Upton / Common hogweed (Heracleum sphondylium) and other lake margin vegetation covered in hoar frost on a cold winter morning, Bowood Park, Wiltshire, UK, December.

Nick Upton / Old Harry's Rocks with stands of Wild Parsnip (Pastinaca sativa) and Wild carrot (Daucus carota) growing on chalk cliff top grassland in the foreground, Handfast Point, Studland, Dorset, UK, August 20...

Nick Upton / Wild Parsnip (Pastinaca sativa) with yellow flowers and Wild carrot (Daucus carota) with white flowers growing on chalk cliff top grassland, Old Harry's Rocks, Studland, Dorset, UK, August.

Nick Upton / Wild Parsnip (Pastinaca sativa) with yellow flowers and Wild carrot (Daucus carota) with white flowers growing on chalk cliff top grassland, Old Harry's Rocks, Studland, Dorset, UK, August.

Nick Upton / Wild Parsnip (Pastinaca sativa) with yellow flowers and Wild carrot (Daucus carota) with white flowers growing on chalk cliff top grassland, Studland, Dorset, UK, August.

Nick Upton / Wild Parsnip (Pastinaca sativa) with yellow flowers and Wild carrot (Daucus carota) with white flowers growing on chalk cliff top grassland, Studland, Dorset, UK, August.

Nick Upton / Ichneumon wasp (Ichneumonidae) nectaring on Common hogweed (Heracleum sphondylium) flowers on a chalk grassland slope, near Bradford on Avon, Wiltshire, UK, May.

Nigel Cattlin / Yellow wild parsnip (Pastinaca sativa) plant in flower on a fine summer day, Berkshire, July

Nick Upton / Black garden ant (Lasius niger) feeding on Common hogweed flowers (Heracleum sphondylium), Wiltshire, England, UK, July.

Nick Upton / Close-up of a Common red soldier beetle (Rhagonycha fulva) nectar feeding on Common hogweed flowers (Heracleum sphondylium), Wiltshire, England, UK, July.

Nick Upton / Common red soldier beetles (Rhagonycha fulva) mating while nectar feeding on Common hogweed flowers (Heracleum sphondylium), Wiltshire, England, UK, July.

Nick Upton / Common red soldier beetle (Rhagonycha fulva) nectar feeding on Common hogweed flowers (Heracleum sphondylium), Wiltshire, England, UK, July.

Nick Upton / Common red soldier beetles (Rhagonycha fulva) nectar feeding and looking for mates on Common hogweed flowers (Heracleum sphondylium), Wiltshire, England, UK, July.

Nick Upton / Common red soldier beetles (Rhagonycha fulva) nectar feeding and looking for mates on Common hogweed flowers (Heracleum sphondylium), Wiltshire, England, UK, July.

Nick Upton / Common red soldier beetles (Rhagonycha fulva) mating while nectar feeding on Common hogweed flowers (Heracleum sphondylium), Wiltshire, England, UK, July.

Linda Pitkin / Greater water-parsnip (Sium latifolium) locally rare plant. Langham Ponds SSSI, Runnymede (NT), Surrey, England, July. Endangered species in England.

Linda Pitkin / Wild parsnip (Pastinaca sativa) Witley Common,, Surrey, England, July.

Linda Pitkin / Hemlock (Conium maculatum) and Hogweed (Heracleum sphondylium) in flower, alongside Broadwater Lake, Weybridge, Surrey, England, June 2019.

Nick Upton / Common red soldier beetle / Black-tipped soldier beetle (Rhagonycha fulva) nectar feeding on Common hogweed flowers (Heracleum sphondylium) in a chalk grassland meadow, Wiltshire, UK, July.