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Is English ivy REALLY invasive?

Q: I realize ivy is considered an invasive plant, however, we like it and are using it for erosion control. We recently planted cuttings with the help of root hormone powder. My question: is this an okay time to have planted this so that it can thrive?

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Scotch broom is beautiful, but noxious

Scotch broom is noxious in Pacific Northwest

May 29, 2009 | News Story

Look out for prickly Paterson's Curse in wildflower seed mixes

Be on the lookout for prickly Paterson's Curse in wildflower seed mixes.

Nov 19, 2007 | News Story

I am bamboozled, help!

Q: Greetings - any tips or resources on helping rid, or at least control creeping bamboo? Digging up is partially helpful here, but a water pipe located below the main plant makes it problematic. Mainly want to control the shoots. Seems like repeated applications of Round Up is the most common suggestion so far. Attached is a photo of the broad leaf variety we're dealing with

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Gorgeous yellow iris is ecological threat to PNW wetlands

Gorgeous yellow iris Is ecological threat to PNW wetlands

Jun 20, 2008 | News Story

In droughty Klamath Falls, watering trees may help defend against bronze birch borer

Symptoms of the voracious insect appear for the first time in Klamath Falls

Gail Wells | Jun 29, 2017 | News Story

Invasive grass called false brome, threatens Oregon native plant diversity

Oregon is the first state to list invasive non-native grass called false brome as a noxious weed.

Mar 2, 2007 | News Story

How to keep butterfly bush from spreading noxiously

Butterfly bush, or Buddleia, can be a very aggressive non-native plant that, in certain situations, can overtake native vegetation. Take care to cut blossoms off in the fall.

Jan 21, 2005 | News Story