giant hogweed
rhs.org.ukthe royal horticultural society is the world's leading gardening charity; join us for days out at stunning gardens, exclusive access to amazing flower shows & expert advice.
dec.ny.govthe new york state department of environmental conservation (nysdec) - new york state's environmental protection and regulatory agency
invasivespeciescentre.cathe invasive species centre aims to prevent the spread of invasive species within canada's land and waterways. providing up-to-date species profiles.
invadingspecies.com
wildsheffield.comyour local wildlife trust! working in sheffield & rotherham towards a better future for wildlife, people and the green spaces we all love.
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