Spurge laurel flowers

Spurge Laurel (Daphne laureola)

Also known as: Daphne, Daphne spurge, Daphne-laurel, laurel-leaved daphne, olive-spurge, and wood laurel A hardy evergreen shrub, spurge laurel threatens some of the Willamette Valley’s […]

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Purple Loosestrife flowers.

Purple Loosestrife (Lythrum salicaria)

Also known as: Purple lythrum, spiked loosestrife Purple loosestrife’s showy, upright clusters of purple flowers give it the nickname – the beautiful killer. It is […]

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Knotweed leaves and flowers.

Woody Knotweed (Polygonum species)

Species include: Japanese knotweed (Polygonum cuspidatum or Fallopia japonica) also known as Japanese bamboo, Mexican bamboo, false bamboo, Himalayan fleece vine, crimson beauty sally rhubarb, […]

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Giant hogweed meadow

Giant Hogweed (Heracleum mantegazzianum)

Also known as: giant cow parsnip, wild parsnip, cartwheel flower Description: Life Cycle: Perennial (life cycle lasts more than one year) Early Detection and Rapid […]

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Garlic Mustard

Garlic Mustard (Alliaria petiolata)

Also known as: hedge garlic, sauce-alone, jack-by-the-hedge, poor man’s mustard, jack-in-the-bush, garlic root, garlicwort, and mustard root. Garlic mustard is one of our region’s most […]

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False Brome (Brachypodium sylvaticum)

Also known as: Slender false brome, wood false brome False brome is spreading throughout the Willamette Valley at an alarming rate. Originally introduced to the […]

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