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Plant Database
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
Yellow flower coming out of a cluster of spiky leaves
Woolly Distaff Thistle
Carthamus lanatus
Invasive
a mound of starburst leaves and purple tipped white flowers with long spines surrounded by dry, bare earth.
Iberian Starthistle
Centaurea iberica
Invasive
Two spiky flower heads, on spiky stems, with yellow flower
Yellow Starthistle
Centaurea solstitialis
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
a branch of hawthorn with lobed, mitten like leaves.
English Hawthorn
Crataegus monogyna
Invasive
Close up of small yellow flowers
Scotch Broom
Cytisus scoparius
Invasive
Small plant with alternate stems of purple showy flowers
Paterson’s Curse
Echium plantagineum
Invasive
Stemps with small white bell shaped flowers
Spanish Heath
Erica lusitanica
Invasive
Cluster of small green and yellow flowers
Leafy Spurge
Euphorbia esula
Invasive
Side view of typical carrot family flower umbels with yellow flowers.
Fennel
Foeniculum vulgare
Invasive
Roots and stems with oval opposite leaves
Goatsrue
Galega officinalis
Invasive
Orange Hawkweed Hieracium aurantiacum Orange and Yellow flowers
Orange Hawkweed
Hieracium aurantiacum
Invasive
Stem with yellow flowers and poofy seed head
Meadow Hawkweed
Hieracium pratense or caespitosum or Pilosella caespitosa
Invasive
Close up of several yellow 5 petaled flowers
St. Johnswort
Hypericum perforatum
Invasive
a clump of irises with grass-like foliage and purple iris flowers
Oregon Iris
Iris tenax
Native
Yellow flowers and green and dried seed pods
Dyer’s Woad
Isatis tinctoria
Invasive
bunches of soft rush growing in standing water
Pacific Rush
Juncus effusus
Native
Single flower with white petals and yellow center
Oxeye Daisy
Leucanthemum vulgare
Invasive
Group of long green stems covered in small yellow flowers
Dalmatian Toadflax
Linaria dalmatica ssp. dalmatica
Invasive
Reed Canarygrass Phalaris arundinacea Row of long grass stalks with long green slender blades and spires of seed heads
Reed Canarygrass
Phalaris arundinacea
Grass
Invasive
Pokeweed Phytolacca americana Several small blue/purple berries on red stalk
Pokeweed
Phytolacca americana
Invasive
Spiky Branch with stems with 5 palmate leaflets
Himalayan Blackberry
Rubus bifrons
Invasive
Stem with spikes, many green comound leaflets with red and blue berries
Cut-leaf Blackberry
Rubus laciniatus
Invasive
Tansy Ragwort Senecio jacobaea Small Bush with several heads of clusters of yellow flowers
Tansy Ragwort
Senecio jacobaea
Invasive
Milk Thistle Silybum marianum Purple tuft on top of spiky small leaved stalk
Milk Thistle
Silybum marianum
Invasive
Green stalky bush covered in small yellow flowers
Spanish Broom
Spartium junceum
Invasive
Puncturevine Tribulus terrestris Small yellow petalled flower on spiny stem with opposite leafelets
Puncturevine
Tribulus terrestris
Invasive
Red Clover flower and leaves
Red Clover
Trifolium pratense
Small Green shub with bunches of small yellow flowers
Gorse
Ulex europaeus
Invasive
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