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The Salvinia plant, a noxious( In Australia ...
Purple flowers are about an inch across with four petals. Considered a
This perennial has been designated as a
). Ageratina adenophora is classified by the U.S. Federal Government as a
This herbaceous annual has been introduced to the Eastern US and is considered ...
The flowering plant in the foreground right reminds me of Queen Ann's Lace ...
Musk Thistle can get very tall, up around six feet. Huge purple heads and spiky ...
This plant spreads outwards but only gets about 8 inches tall. Considered a ...
Thin to dense shrub up to 2 metres; spiky leaves straight off stems; small ...
pale yellow with five (usually) notched petals. Introduced from Europe. ...
Small pinkish-purple flower with 5 petals, covered in sticky hairs. Leaves ...
Taller plant with simple, toothed, clasping leaves along stem. Stem and leaves ...
light purple blooms, leaves lanceolate
This very pretty uninvited guest is invasive in Coastal Northern California
This is a common pond iris. It is used to balance or clean ponds. It can be ...
burr producing plant with tiny white flower. Burrs about 1/4 inch long
, Australia and New Zealand as an introduced species and often a
species of Typha are considered noxious ...