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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.
Pink Yarrow blooms, Achillea Millefolium plants in field
Close up of delicate white and pink valerian flowers
A macro image of field  penny cress also know as Thlaspi arvense
Hydrastis canadensis (Goldenseal) Native North American Woodland Wildflower
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.
Cow parsnip at Milgara Ridge  Golden Gate National Recreation Area  on a foggy spring day.
Common hawthorn with white flowers
Wildflower hemlock blooming isolate white
Blackberry (Rubus fruticosus) flowers in Winter, home to insects.
Garlic Mustard (Alliaria petiolata) with white flowers under the warm spring sun
Fool's parsley in a wildflower meadow.
Deficiency of minerals in plant. lack of nitrogen, potassium. Sick yellow currant leaves.
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.
Valerian herb flower sprigs isolated on white background
Elder flowers in nature
Picture of a summer delight flower - Ligusticum Scoticum
Yarrow thriving in a meadow in Pembrokeshire, Wales
Raspberry growing in the backyard garden. raspberry plant with red and yellow fruits at home
Garlic Mustard - has been linked to poor regeneration of our native oak-hickory forests
Jacquemontia cumanensis (Also known clustervine, thicket clustervine). Species in this genus are commonly known as clustervine
isolated horse chestnut-tree branch with leaves and flowers
Valerian flowers with  mallow leaves isolated on white background
White bryony (Bryonia alba) is a wildflower / climbing vine of the cucumber family. In early autumn it will grow quickly to cover fences and walls as it uses its tendrils to climb upwards.
Wildflower hemlock blooming plant isolate white
Fools parsley in a grass meadow
Pressed and dried set of flowers and leaves plantago (psyllium).  Isolated on white background. For use in scrapbooking, floristry (oshibana) or herbarium
Closeup on white field flowers
Small white and pink flowers clustered on a heavy stem
Mapleleaf viburnum (Viburnum acerifolium) in bloom, medium shot, spring, Connecticut. An attractive wild shrub of the forest understory that is a favorite of pollinating insects.
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