
Meet the Team

Principal Landscape Architect

Senior Landscape Designer

Business Manager
Areas We Serve:
Landscape Contractors
| Third Rock Landscape Construction Ben Snowden and Adam Seskin 16205 SE Harold Ave Portland, OR 97267 503.380.2915 Email: thirdrocklandscape@gmail.com | Northwest Native Landscapes LLC Dan’l Langer, Owner 3256 NE 80th Ave Portland, OR 97213 503.351.6988 Email: danl@northwestnativelandscapes.com |
| Living Color Landscape & Nursery Jerry and Trevor Ingle PO Box 514 Wilsonville, OR 97070 503.678.3364 Email: jerry@livingcolornursery.com Email: trevor@livingcolornursery.com | Natureworks, LLC Howard Lehmann 13292 SW Westfall Rd. Sherwood, OR 97140 503.582.0510 Email: info@gonatureworks.com |
| Scholls Lawncare & Landscape, LLC Jeff Froeber 10990 SW River Rd Hillsboro, OR 97123 503.799.7555 Email: jeffschollslandscape@gmail.com | Landscapes by NW Mowbotics Matt Stenhouse 503.961.3212 Email: grassstaff2016@gmail.com |
| Viridian Landscaping Matt Schwab 14507 SE Arbor Valley Dr. Clackamas, OR 97015 503.997.8757 Email: Matt@ViridianLandscaping.com | Big Sky Landscaping Matthew Magana 1102 Abernethy Rd. Oregon City, OR 97045 503.572.9997 Email: matthew@bigskylandscaping.com |
| CC Landscape Inc. Carlos Cruz P.O. Box 593 Aurora, OR 97002 503.710.1378 Email: cclandscapeor@gmail.com |
Craft Gardeners
| Sherry Gardenscapes Rob Sherry 414.418.7686 Email: Robertsherry0@gmail.com | Big Sky Landscaping Matthew Magana 1102 Abernethy Rd. Oregon City, OR 97045 503.572.9997 Email: matthew@bigskylandscaping.com |
Arborists
| Portland Tree Consultancy Lou Phemister 4541 NE 20th Ave Portland, OR 97211 573.999.3886 Email: louphemister@outlook.com |
Vendors
| Oregon Outdoor Lighting Ryan Schulze 402 Beavercreek Rd. Suite 108 Oregon City, OR 97045 Direct: 503.593.8211 Office: 503.313.8580 Email: ryan@oregonoutdoorlighting.com | Hunter Industries PNW Specification Danny Motylewski 503.504.6909 Email: Danny.Motylewski@hunterindustries.com |
| R&M Plant Procurement, LLC Rachel Ralstin 212 Coolidge St. Silverton, OR 97381 503.873.6579 Email: sales@rmplantprocurement.com | Willamette Turf Merry Ballweber 8624 Wabash Drive Salem, OR 97305 503.792.3734 Email: turf@web-ster.com |
| Landscape Forms Emily Noh 415.336.5713 Email: emilyn@landscapeforms.com | Andy Paris & Associates Land Surveying Neil Tunmore 15450 Boones Ferry Road (STE 7) Lake Oswego, OR 97035 503.636.3341 |
| Yoder Concrete Construction Concrete Contractor Levi Yoder 9888 S Barnards Rd. Canby, OR 97013 971.404.4237 Email: levi.yodercc@gmail.com | Planting Partners Nursery Alexandria Kehoe & Erin Galbraith 17520 S Holly Lane Oregon City, OR 97045 503.414.0008 Email: plantingpartnersnursery@gmail.com |
General Contractors
| Riggs & Martin, Inc. Remodeling Contractors Scott Riggs and Scott Weaver CCB #109829 14200 SE McLoughlin Blvd, Suite C Milwaukie, OR 97267 503.650.6786 Email: email@riggsandmartin.com | Pacific Renovators LLC Michael Nelson 5410 SE Byron Drive Milwaukie, OR 97267 503.944.9278 Email: pacificrenovators@gmail.com |
Landscape Contractors
| Kelley Garden Service Keith Kelley 11523 Sand Point Way NE Seattle, WA 98125 206.795.4738 Email: info@kelleygardenservice.com | In Harmony Sustainable Landscapes Scott Grove 631 237th St. SE Bothell, WA 98021 425.486.2180 Email: information@inharmony.com |
Arborists
| Tree Solutions Inc. 2940 Westlake Ave N #200 Seattle, WA 98109 206.528.4670 |
Vendors
| Britescape Robert Hobart 930 N 95th St. Seattle, WA 98103 206.523.7366 Email: info@britescape.com | Advanced Irrigation Don Blackwell 213 Frontage Road South Pacific, WA 98047 1.888.833.6220 Email: service@advancedinc.com |
Clement Walsh Landscape Architect Inc. would like to add you and/or your company to their website on our partner online directory. We are looking for Vendors, Architects, Arborists, and Engineers to create a directory and reference. If you are interested in having your company details added to this directory, please complete the form below to indicate your interest.
Office Barn Renovation
Follow along as we renovate a 1905 barn and make it our home office! This building was originally located off Dollar Street in West Linn, Oregon, and was torn down, moved, and rebuilt on an Old Willamette property in the 1980s. It is still designated as a Historic property today.
Our Sustainable Practices
Being an environmentally aware landscape architectural firm, we promote sustainable development, green infrastructure, sustainable urban development, the application of ecological design, the improvement of water management, the increase of energy efficiency and the use of low impact materials.
Specifically, our landscape designs promote and incorporate into their specifications the following sustainable practices:
Preservation: We strive to preserve and protect valuable on-site features, such as mature trees, during our landscape design process. Preserving mature trees enhances air quality, supports wildlife, reduces erosion, regulates temperature, and adds both aesthetic and economic value.
Reuse or Reclaim On-Site Materials: During our initial site analysis, we conduct a thorough inventory of all existing materials and features to identify opportunities for reuse in the new design. For example, a large tree slated for removal may be repurposed into seating or milled into planks for raised garden beds. Similarly, boulders and stones unearthed during excavation can be transformed into garden accents or borders.
Native Plants: We encourage the use of native plants wherever possible, as they are well-suited to the Pacific Northwest’s climate and conditions. Native plants require less water and upkeep, promote biodiversity, support local wildlife, and contribute to sustainable, beautiful landscapes that thrive naturally.
Replace Conventional Lawn with Ecological Alternatives: Traditional lawns can be high-maintenance, requiring weekly mowing and regular fertilization, which can strain both your resources and the environment. To reduce this impact, we recommend replacing portions of your lawn with wildflower mixes, no-mow grasses, or herbaceous groundcovers such as dwarf thyme and chamomile.
Strategic Irrigation Plans: We design planting plans by grouping plants with similar water needs together, which informs an efficient irrigation system. This approach creates water-use zones within the landscape, optimizing irrigation by ensuring each zone receives the appropriate amount of water without waste.
Local Stone: For a low-carbon footprint landscape, we partner with stone vendors to source high-quality local stone. By using locally sourced materials, you reduce transportation emissions while adding lasting beauty and functionality to your design through natural pathways, walls, and garden features.
Stormwater Management: With all the rain we get in the Pacific Northwest, managing stormwater is essential! We design landscapes that use rain gardens, swales, and dry stream beds to capture and filter runoff, reducing erosion and protecting waterways while adding natural beauty.
Drought-Tolerant Plants: If you want to reduce your water bill, we design drought-tolerant gardens using resilient plants and efficient irrigation systems. These sustainable landscapes conserve water, require less maintenance, and stay beautiful even during dry spells, helping you save resources while protecting the environment
Local sourced and locally reclaimed: Incorporating locally sourced and reclaimed products is a fantastic way to create an environmentally responsible landscape. For example, reclaimed bricks can be used for pathways and reclaimed wood from old barns for raised beds. The natural patina on reclaimed products can give a landscape an established and enduring appearance
Fire Safe Designs: Many components go into creating a fire safe landscape including plant selection (fire resistant plants and appropriate spacing to minimize spread), mulch selection (use of non-flammable mulch materials), pathway material, and ongoing maintenance techniques (regular pruning, removal of dead plants and clearing of debris).
Reducing Carbon Footprint: Healthy soil is a key component to addressing climate change and keeping carbon out of the atmosphere. Erosion protection, minimizing site grading and tillage, use of organic amendments, minimizing chemicals and fertilizers, avoiding disturbance and keeping leaves in the yard to decompose are all positive approaches to enhance soil health and thus reduce carbon footprint.
Designing large, dense planting beds is another way to reduce carbon as plants draw CO2 from the atmosphere.
Since concrete is the largest source of carbon emissions in many landscape projects, our firm specifies natural materials and minimizes the square footage of concrete when appropriate.
Landscape Lighting: When designing our landscape lighting plans, we choose fixtures that are shielded with directional lighting to minimize light pollution and create less impact on wildlife. Using motion sensors when applicable also reduces light and energy consumption.
FAQ
1. What is the difference between a Landscape Architect and a Landscape Designer?
A Landscape Architect will have greater technical knowledge and experience in plant and structural design, while a Landscape Designer will focus more on aesthetics, plant selection and layout design. A Landscape Architect requires more education and licensing. They often undergo intense training in design principles, site planning, ecology, horticulture, and construction.
The scope of work for landscape architects and designers varies as well. Landscape architects are licensed professionals who can engage in a broad range of projects including large-scale planning, urban design, public spaces, parks, city planning, and other work that involves complex engineering and environmental concerns. Landscape designers often focus on smaller-scale projects such as residential gardens, outdoor living spaces and smaller construction projects.
2. What can I expect throughout your design process?
Our project approach involves meeting with our clients and having a detailed conversation regarding scope of work, schedules, client expectations/deliverables and ongoing progress updates of the varying design phases such as (1) Schematic Design (2) Design Development (3) Construction Documentation and (4) Construction Administration and Observation. Please visit our Services Page to learn more.
3. Can you supply all sub-contractors after the design is complete?
We have a thorough list of trusted contractors that we can provide to you after our design. We always recommend getting multiple bids to ensure you are getting a fair price and are happy with their proposal.
4. On average, how long does it take to have plans designed for my home?
Timing depends entirely on scope of work, but on average it takes a couple months to deliver plans to our clients.
5. I want my yard to be eco-friendly/green landscape. Is this something you can provide?
Yes, we are an environmentally conscious landscape architectural firm that routinely integrates sustainable practices into our designs. We promote sustainable development, green infrastructure, sustainable urban development, the application of ecological design, the improvement of water management, the increase of energy efficiency and the use of low impact materials.
6. Can you provide after care advice once the project is complete?
Yes, we are happy to assist you in after care advice or any follow up plans needed once your project is complete. We now offer a Garden Maintenance service which will provide you with maintenance punch lists, maintenance services and possible enhancement opportunities. Visit our Residential Garden Services page to learn more.
7. What areas do you service?
Clement Walsh is licensed in the states of Oregon and Washington.
8. Do you design both residential and commercial landscapes?
Yes! We have extensive experience in both residential and commercial spaces. Visit our portfolio page to see a selection of our work in both categories



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