Ivyout

Description

English ivy is a woody, climbing vine that has been used extensively in the Pacific Northwest. Ivy can be found in roadside plantings, parking lots, as ornamental decoration and climbing on buildings, fences and other vertical surfaces. Research has shown the problem ivies to be Hedera hibernica, Hedera helix 'Baltica', 'Pitttsburgh' and 'Star'. However, ivies are often mislabeled at nurseries, so don't plant any ivy except in pots. English ivy is not native to the United States and has no natural predators or pests to keep it in check. It easily escapes from planting areas and invades natural areas, parks and urban forests. It creates "Ivy Deserts" - areas so dominated by ivy that no other vegetation survives. Ivy affects trees negatively, especially when it climbs into the canopy. By adding weight to limbs and reducing air flow around the tree's trunk, ivy makes a tree more susceptible to canopy failure, wind stress and disease. It can also strangle trees around their base and reduce the flow of nutrients up and down the tree. English ivy does not provide a significant food for native wildlife, but does provide habitat for rats.

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