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Plant Database
Stem with ball cluster of unopened flowers
Biddy-Biddy
Acaena novae-zelandiae
Invasive
Light green cluster of winged seeds (samaras) of Norway Maple
Norway Maple
Acer platanoides
Invasive
a cluster of reddish brown samaras.
Tree of Heaven
Ailanthus altissima
Invasive
Tall spire of smaller purple flowers with yellow and white stamen
Indigo Bush
Amorpha fruticosa
Invasive
close up leaf edges
False Brome
Brachypodium sylvaticum
Grass
Invasive
tapering spikes of purple flowers thrust out from lance shaped leaves
Butterfly Bush
Buddleja davidii
Invasive
Italian Thistle Carduus pycnocephalus Stalk with long spiky leaves and green spiky unopened flower pod
Italian Thistle
Carduus pycnocephalus
Invasive
Meadow Knapweed Centaurea pratensis Purple flowers on long stems
Meadow Knapweed
Centaurea pratensis (aka Centaurea jacea x nigra, Centaurea debeauxii ssp. thuillieri)
Invasive
Slender stalks with flower buds opening up to whispy purple thin petalled flowers. Bracts have dark tips.
Spotted Knapweed
Centaurea stoebe
Invasive
Canada Thistle Cirsium arvense Flower pods with small purple tufts
Canada Thistle
Cirsium arvense
Invasive
Bull Thistle Cirsium vulgare Spiny casing with purple tuft at top
Bull Thistle
Cirsium vulgare
Invasive
Old Man's Beard Clematis vitalba Tree with white flowers
Old Man’s Beard
Clematis vitalba
Invasive
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