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Stressed trees show dieback

Browning or dieback is usually caused by weather-related stress, sometimes in combination with pests and diseases.

Mar 2018 | Article

October Garden Calendar

Information about garden planning, maintenance and clean up, pest monitoring and management, houseplants, and indoor gardening for the month of October.

May 2018 | Article

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

November garden calendar

Information about garden planning, maintenance, cleanup, pest management, houseplants and indoor gardening for the month of November.

May 2018 | Article

Scotch broom is beautiful, but noxious

Scotch broom is noxious in Pacific Northwest

May 29, 2009 | News Story

Gorgeous yellow iris is ecological threat to PNW wetlands

Gorgeous yellow iris Is ecological threat to PNW wetlands

Jun 20, 2008 | 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