Dark green leaves and red berries.

English Hawthorn (Crataegus monogyna)

Also known as: common hawthorn, singleseed hawthorn, oneseed hawthorn, Mayblossom Like invasive blackberry, English hawthorn is an all-too-common weed that is a thorn in landowners […]

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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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Tansy Ragwort (Jacobaea vulgaris)

Also known as: Tansy, stinking Willie, tansy butterweed, staggerwort, ragwort, stinking davies, stinking ninny Tansy ragwort poses a serious threat to livestock. Every part of […]

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Oblong spurge flowers.

Oblong Spurge (Euphorbia oblongata)

Also known as: Eggleaf spurge, Balkan spurge Oblong spurge is commonly planted in gardens as an ornamental species – with brilliantly bright yellow flowers, it’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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Policeman’s Helmet (Impatiens glandulifera)

Also known as: Ornamental jewelhead, Himalayan balsam Have you ever felt you were chasing a ghost? That’s the feeling we get when trying to identify […]

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