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INVASIVE SPECIES - LATEST
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Zebra Mussel
Dreissena polymorpha
Zebra mussels are filter-feeding, freshwater, bivalve mollusks. Zebra mussels are small, ¼” to 1 ½” long, and D-shaped with light and dark brown stripes.
Giant Hogweed
Heracleum mantegazzianum
Giant hogweed is a biennial herb that can grow 8-14 ft tall. Plants sprout in early spring from forked taproots or seeds. Stems are hollow, and leaves are lobed. The best time to identify giant hogweed is when it is in bloom in June.
Eurasian Boar
Sus scrofa
Eurasian boar, also known as feral hogs or feral swine, can include domestic pigs or "pet" pigs that have been released or escaped from captivity and "gone wild", wild boar (native to Eurasia) that escaped from licensed shooting preserves, or a hybrid cross between domestic pigs and wild boar.
Curly-leaf Pondweed
Potamogeton crispus
Curly-leaf pondweed is a submerged perennial that resembles many native pondweeds. Care must be taken to correctly identify this species. Rigid, reddish-green, oblong leaves have distinct, finely-toothed, wavy edges. The plant's flat, reddish-brown stem grows from 1-16 ft. Most reproduction is from winter buds, called turions.