Erigeron canadensis
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Erigeron canadensis is an annual plant native throughout most of North America and Central America. It is also widely naturalized in Eurasia and Australia. Common names include horseweed, Canadian hor
Erigeron canadensis from Britain by D Merrick 14
General form, may be light green, inflorescence fairly tight
Stemmy form
Flower head, hairless or mostly so, ray petals small but conspicuous, base of head not widely bulging
Glyphosate
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Glyphosate is a broad-spectrum systemic herbicide and crop desiccant. It is an organophosphorus compound, specifically a phosphonate, which acts by inhibiting the plant enzyme 5-enolpyruvylshikimate-3
Erigeron canadensis
…Common names include horseweed, Canadian horseweed, Canadian fleabane, coltstail, marestail, and butterweed. It was the first weed to have developed glyphosate resistance, reported in 2001 from Delaware. Erigeron canadensis is an annual, herbaceous plant growing to 1.5 metres (5 feet) tall, with sparsely hairy…
Glyphosate used as an alternative to mowing in an apple orchard in Kastelbell-Tschars, Italy
Landscaping company in Oklahoma applying a weed control product that contains glyphosate
Palmer amaranth (Amaranthus palmeri)
Horseweed