What to Know: This perennial weed spreads by seeds and a migrating root system. Despite the name, it’s actually native to Europe and brought to North America in the 1600s.

Weeds are categorized by their life cycle, and identifying them as annual or perennial is a key step in effective control.

Thursday, June 16, 2005 Rene Eisenbart / The OregonianWhite clover Don't let perennial weeds take up residence. Because perennials live for more than one year, they have ample opportunity to grow ...

Option A: Collect and mount 1 weed specimen [see pub.4-H 247 -W ] on poster [see poster guidelines county handbook]. Show flower and or fruit, leaf, stem and root characteristics. Include name of weed ...

Perennial weeds such as Canada thistle, dandelion and bindweed are the hardest to control, ... Learning to identify them will make controlling them more effective.

Option A: Collect and mount 1 weed specimen [see pub.4-H 247 -W ] on poster [see poster guidelines county handbook]. Show flower and or fruit, leaf, stem and root characteristics. Include name of weed ...

Perennial grass weeds will appear in a few spots in the yard or at the edge of the property first and expand from there. Scouting your landscape often will help identify the weeds early.

The two weeds for this week, silverleaf nightshade (Solanum elaeagnifolium) and nutsedge (Cyperus esculentus and Cyperus rotundus, aka yellow and purple nutsedge, respectively), are perennial ...

Effective chemical weed control requires identification of the weeds as to their classification (grass, broadleaf, sedge, etc.), life span (annual or perennial), and season of active growth (cool ...

Fielding Questions: Creeping Charlie ID, planting perennials in fall, clematis cutback This week, Don Kinzler IDs a weed overtaking a reader's lawn and answers questions about the best time to ...