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The sap of it causes phytophotodermatitis in humans, resulting in blisters and long-lasting scars. Ukraine
Cow parsnip at Milgara Ridge  Golden Gate National Recreation Area  on a foggy spring day.
The hogweed a huge plant with large white parasol-like flowers, a dangerous plant for humans that can suffer severe burns from it
Harmful plant cow parsnip. The flower of cow parsnip. Large white inflorescences of cow parsnip close-up. Large flowers of cow parsnip at close range.
Heracleum, or Sosnowski's borschivny - a dangerous allergic plant that grows in the summer. Poisonous inflorescence. A poisonous perennial plant.
A plant whose roots are used as a sedative and to treat certain medical conditions. It is being studied as a way to improve sleep in cancer patients undergoing treatment. Also called garden valerian, Indian valerian, Pacific valerian, Mexican valerian, garden heliotrope, valerian, and Valerianae radix.
Close up of delicate white and pink valerian flowers
Focus on the foreground\nThe image is completely green
Flower of hogweed along roadside during flowering phase
Heracleum maximum, Cow Parsnip or  Indian Celery, is the only member of the genus Heracleum native to North America. Huckleberry Botanic Regional Preserve, Oakland, California. Apriaceae.
close up of hogweed flower blooming
Phacelia tanacetifolia blue tansy
Heracleum sosnovskyi inflorescence on blue sky background. Heracleum sphondylium contains the intense toxic allergen furanocoumarin.
Fool's parsley in a wildflower meadow.
Close up of Hogweed leaves, Heracleum sphondylium. Green leaves of hogweed, weed.
Black Cohosh Herbal Medicine
Gram farming
The flower head of a Giant Hogweed plant (Heracleum mantegazzianum), the sap from which can cause serious skin burns when exposed to sunlight.
Borago officinalis is favorite medicinal herb with edible flowers.
The Giant Hogweed is a highly invasive wildflower that can cause rashes and blisters and can cause blindness.  It often can grow in excess of seven feet tall.
Close up of ribwort plantain flowers
dutch nature with Giant hogweed ,nature scene in sneek,friesland western europe the netherlands
Close-up of a ground elder (Aegopodium podagraria) against a blurred green background. Ground elder is generally considered a nuisance weed
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Invasive exotic plant with claw-shaped leaves. The plant can grow to a height of 4 meters. Blooms from June to August with a variable number of compound umbels full of white flowers. The juice of the plant has a harmful effect on the skin and eyes
Cow Parsley in a field.
Flowering Invasive Heracleum mantegazzianum the gaint hogweed
Low to short hairy annual or biennial; hairs whitish or reddish. Lower leaves stalked, upper unstalked, the leaflets linear-oblong; stipules lanceolate, pointed. Flowers whitish or pinkish, 4mm long, numerous, in dense oblong or egg-shaped, stalked, silky-hairy heads, the petals much shorter than the calyx. Pod 1 seeded.\nHabitat: Dry grasslands, often on slightly acid soils, field borders, grassy heaths, road verges, woodland pathways, waste places, sometimes on sand dunes, at low attitudes.\nFlowering Season: June-September.\nDistribution: Throughout Europe, except the extreme North.\n\nThis is a common Species on the described Habitats in the Netherlands.
Blooming onion flower in home garden
poppies
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