--- title: "Invasive Species Removal Guide WA | Sasquatch Land Co." description: "How to identify and eliminate invasive plants destroying your Western Washington property. Expert removal strategies from Sasquatch Land Co." lang: en json-ld: | [ { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://www.sasquatchlandco.com/" }, { "@type": "ListItem", "position": 2, "name": "Blog", "item": "https://www.sasquatchlandco.com/blog" }, { "@type": "ListItem", "position": 3, "name": "A Homeowner's Guide to Dealing with Invasive Species", "item": "https://www.sasquatchlandco.com/blog/invasive-species-guide" } ] }, { "@context": "https://schema.org", "@type": "Article", "headline": "A Homeowner's Guide to Dealing with Invasive Species", "image": "/assets/blog-invasive-species-Cn7qc7O-.jpg", "datePublished": "December 8, 2024", "dateModified": "2026-03-11", "author": { "@type": "Person", "name": "Ben Surdi", "jobTitle": "Owner", "url": "https://www.sasquatchlandco.com/about" }, "publisher": { "@type": "Organization", "name": "Sasquatch Land Co." }, "url": "https://www.sasquatchlandco.com/blog/invasive-species-guide" } ] --- [![Sasquatch Land Co. Logo](/assets/logo-Cy6BnBhX.png)Take Your Yard Back ](/) [Services](/services)[Areas](/areas)[Gallery](/gallery)[Instant Pricing](/instant-pricing)[Guide](/consumer-guide)[Financing](/financing)[Reviews](/reviews)[FAQ](/faq)[Blog](/blog)[Careers](/careers)[(360) 322-4587](tel:3603224587) [Back to Blog](/blog) December 8, 2024 7 min read # A Homeowner's Guide to Dealing with Invasive Species ![A Homeowner's Guide to Dealing with Invasive Species — Sasquatch Land Co. blog post illustration](/assets/blog-invasive-species-Cn7qc7O-.jpg) Invasive species can take over your Western Washington property faster than you'd think. In the mild, wet climate of Snohomish, King, Skagit, and Island counties, aggressive non-native plants don't just look bad — they choke out native species, damage structures, create fire hazards, and reduce your property value. Here's what every Pacific Northwest homeowner should know. ## Western Washington's Worst Invasive Plants While the Midwest battles honeysuckle and kudzu, Western Washington has its own rogues' gallery. Himalayan Blackberry is the undisputed champion of invasive destruction — a single plant can spread 20+ feet per year, forming impenetrable thickets with canes reaching 15 feet tall. English Ivy climbs trees, adds weight, catches wind, and eventually kills mature conifers by blocking sunlight. Scotch Broom colonizes disturbed ground and produces thousands of seeds per plant that remain viable in the soil for decades. Japanese Knotweed grows through concrete, asphalt, and even building foundations, causing structural damage. Learning to identify these plants early is critical — every season you wait, the problem doubles. ## Why Invasive Species Are So Dangerous Here Western Washington's mild winters and abundant rainfall create a paradise for invasive species. Unlike colder climates where winter freezes set back growth, our plants barely go dormant. Himalayan blackberry canes can grow 2–3 inches per day during peak season. A single property can go from 'a few blackberry canes' to 'completely impassable' in two growing seasons. Beyond the vegetation, invasive plants reduce property values by 5–15%, create liability for fire and trip hazards, and can trigger county code enforcement actions if they spread to neighboring properties. ## DIY vs. Professional Removal Small patches can sometimes be managed with manual pulling and targeted herbicide application. However, for anything larger than a quarter acre — or for established blackberry thickets, ivy-covered trees, or knotweed infestations — professional forestry mulching is far more effective. Our mulching head works several inches into the surface layer, processing invasive brush along with the root crowns and near-surface growth — more thorough than surface-only mowing. For blackberry, we recommend mulching followed by monitoring; Himalayan blackberry can regenerate from deeper roots and banked seed, so a follow-up pass on regrowth is part of the plan. ## The True Cost of Waiting We hear it all the time: 'I'll deal with the blackberries next year.' Here's why that's expensive. A quarter-acre blackberry infestation that costs $1,200 to clear today will be a half-acre infestation costing $2,400 next year and a full-acre nightmare costing $4,000+ in two years. Invasive species grow exponentially, not linearly. The cheapest time to address invasive plants is always right now. ## Restoration After Removal After clearing, the key to preventing re-invasion is establishing native ground cover quickly. Nature fills bare ground fast — if you don't plant what you want, you'll get more of what you don't want. We recommend seeding with a native Pacific Northwest grass and wildflower mix within 2–4 weeks of mulching. For areas near streams or wetlands, native shrub plantings (red osier dogwood, snowberry, salal) help stabilize banks and compete with invasive regrowth. The mulch layer from our clearing process acts as a natural weed barrier, giving your native plantings a head start. ## When to Act The best time to address invasive species is now — seriously. Late fall and winter are ideal for mulching because the ground is firmer, deciduous invasives are leafless and easier to process, and the mulch layer has all winter to settle before spring growth begins. Contact us at (360) 322-4587 for a free property assessment and we'll help you develop a removal plan tailored to your Western Washington property. ### Explore Our Services [Forestry Mulching](/forestry-mulching)• [Land Clearing](/land-clearing)• [Blackberry Removal](/blackberry-removal)• [Brush Clearing](/brush-clearing)• [Gravel Driveway Renewal](/gravel-driveway-renewal) ### Service Areas Mentioned [Everett, WA](/areas/everett) • [Marysville, WA](/areas/marysville) • [Lake Stevens, WA](/areas/lake-stevens) • [Monroe, WA](/areas/monroe) • [Arlington, WA](/areas/arlington) • [Mount Vernon, WA](/areas/mount-vernon) • [Woodinville, WA](/areas/woodinville) ### Related Services [Blackberry Removal](/blackberry-removal)[Brush Clearing](/brush-clearing) Ready to get started? 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