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template, Buckthorn- What's the problem? very invasive in our clime because cold tolerance- extended growing season, Buckthorn- What's the problem? very invasive in our clime because seed easily spread by birds, Buckthorn- What's the problem? alternate hosts for soybean aphid, native understory provides wildlife habitat, Glossy buckthorn invades bogs, marshes, river banks, fens, wetlands, pond margins, forests, roadsides, praires, can tolerate diverse habitats such as sun - shade, can tolerate diverse habitats such as wet-dry, Common buckthorn invades woodlands, savannahs,prairies, abandoned field, roadsides, Buckthorn- What's the problem? displaces native understory, Buckthorn- What's the problem? hard to control because resprouts when cut