Hello, There is a plant common in our area (mid-Columbia River Gorge) shown in the attached pictures. They seem to prefer to grow in loose soils. In certain areas (like around my backyard) they can grow uncontrolled and can blanket an area. They're vine-like and will cover other plants, killing them off. Then these weeds die during winter leaving the area bare of other plants. Late spring they come back to blanket the area again. These weeds essentially create a dead zone in areas they dominate. Do you know what this plant is and how to mitigate it? Thanks.