HD Landscape and Maintenance provides lawn care services in Lake Oswego, OR — weekly mowing and edging, fertilization, moss and weed control, aeration, and overseeding, scheduled around how cool-season grasses actually grow in the Willamette Valley. Oregon LCB #9977.
By Donavan Hesedahl, Owner/Operator · Last updated July 2026
This is the question that determines everything else, and it’s where most generic lawn advice falls apart. Lawns in Lake Oswego are cool-season grasses — almost always a blend of perennial ryegrass, fine fescues, and often turf-type tall fescue, sometimes with bentgrass creeping in on older lawns.
Cool-season turf has two growth peaks — spring and fall — and goes semi-dormant in summer heat. That single fact drives the whole calendar:
Two Lake Oswego-specific conditions matter on top of that. Heavy clay soils compact easily, especially on the flatter Palisades and Westlake lots, and compaction is the root cause behind most thin turf and moss. And mature canopy means a lot of Lake Oswego lawns are growing in genuine shade — fine fescues tolerate it, ryegrass doesn’t, and no fertilizer program fixes insufficient light. Sometimes the honest answer on a deeply shaded strip is that it shouldn’t be lawn at all.
Our lawn care covers turf only. If you want beds, shrubs, hedges, and seasonal cleanups on the same schedule, that’s yard care in Lake Oswego — a broader program, and usually the better value on a property where lawn is a minority of the maintained area.
Every visit
Scheduled through the year
Not included, quoted separately
Frequency should follow growth rate, not the calendar. The working rule is the one-third rule: never remove more than a third of the blade height in a single cut. In peak spring growth that means weekly, sometimes more.
| Period | Frequency | Mowing height |
|---|---|---|
| March–May | Weekly | 2.5–3 in, rising |
| June–August | Weekly to biweekly | 3–3.5 in — taller shades roots and holds moisture |
| September–October | Weekly | 2.5–3 in |
| November–February | Every 3–4 weeks as needed | 2.5 in, final cut slightly lower |
Two things worth knowing. Raise the deck for summer — taller turf shades its own root zone and needs less water, and scalping a stressed lawn in July is the most common self-inflicted lawn injury we see. And mowing doesn’t stop in winter here. Cool-season grass keeps growing slowly through a Willamette Valley winter, so a lawn left uncut from November to March goes into spring matted and prone to disease.
Yes, and the work simply changes character rather than stopping.
The practical upshot: a year-round program isn’t twelve identical months billed evenly. It’s a schedule that front-loads work into spring and fall, where it actually pays.
Both are legitimate, and the right answer depends on what you want and what the lawn needs.
Conventional programs use synthetic fertilizers and targeted herbicides. Faster visible results, lower cost, and effective on established broadleaf weed pressure.
Organic and reduced-input programs use slow-release organic fertilizers, compost topdressing, corn gluten and cultural weed suppression, and lean harder on aeration, overseeding, and correct mowing height. Slower to show results — usually two to three seasons — and generally more expensive per application, but it builds soil biology rather than feeding the plant directly.
Three Lake Oswego-specific considerations worth raising before you choose:
Lawn care is priced per visit on a recurring schedule, and per-visit pricing runs lower than one-off mowing because the lawn never gets away from you.
Cost drivers: turf square footage, edging linear footage, obstacles that slow a mower, gate width and access, slope, and visit frequency. Add-on services — aeration, overseeding, fertilization rounds, lime — are typically quoted per application rather than folded into the mowing rate.
We quote after seeing the lawn, because access and obstacle density affect time more than square footage does.
In Lake Oswego we maintain lawns in Lake Grove · Waluga · Westlake · Palisades · Mountain Park · Forest Highlands · First Addition · Old Town · Glenmorrie · Hallinan Heights · Oak Creek · Lakewood · McVey–South Shore · North Shore–Country Club · Uplands · Westridge · Evergreen · Rosewood · Birdshill.
Turf conditions track sun and soil more than anything. Palisades and Westlake sit flatter on heavy clay — compaction and winter drainage drive the aeration schedule. Glenmorrie, Forest Highlands, and Mountain Park are sloped and heavily canopied, so shade tolerance governs the seed blend and some areas are better off not being lawn. First Addition and Old Town have older established lawns on smaller lots, frequently with bentgrass and long-standing moss pressure.
Outside city limits we serve West Linn, Oregon City, Tualatin, Wilsonville, and Clackamas, plus Aloha, Beaverton, Tigard, and Hillsboro on Portland’s Westside, where we’re based.
Lake Oswego pages: Yard care services (full property) · Specialty landscape services · Sustainable landscaping.
HD Landscape and Maintenance is an Oregon LCB-licensed landscape contracting business, license #9977. Request a free Lake Oswego lawn care quote →
Recurring lawn care is priced per visit, driven by turf square footage, edging length, obstacle density, gate access, slope, and frequency. Contract pricing runs lower per visit than one-off mowing because the lawn stays under control. Add-ons like aeration, overseeding, fertilization rounds, and lime are usually quoted per application rather than bundled into the mowing rate.
Follow growth rate, not the calendar, and never remove more than a third of the blade height in one cut. That means weekly from March through May, weekly to biweekly through summer as growth slows, weekly again in September and October during the second flush, and every three to four weeks through winter. Cool-season grass keeps growing slowly through a Willamette Valley winter, so mowing never fully stops.
Mowing at the correct seasonal height, edging and line trimming along beds and hardscape, blowing clippings off paved surfaces, and a visual check for disease, insects, drought stress, and moss. Across the year the program adds fertilization on a cool-season schedule, moss and broadleaf weed control, core aeration, overseeding, lime where pH warrants it, and irrigation coverage checks during the dry months.
Both approaches are available in the market. Conventional programs use synthetic fertilizers and targeted herbicides for faster results at lower cost. Organic and reduced-input programs use slow-release organic fertilizers, compost topdressing, and cultural methods like aeration, overseeding, and correct mowing height — slower to show results, typically two to three seasons, and generally more expensive per application. In Lake Oswego, reduced-input programs have added local relevance because the city’s drinking water comes from the Clackamas River and the Oswego Lake watershed drains to the Willamette. Properties pursuing Backyard Habitat certification should note that pesticide reduction is one of the program’s four criteria.
Yes. The work changes rather than stopping. Spring is the growth flush — weekly mowing, first fertilization, moss and weed control. Summer is heat management: mow higher and less often, water deeply and infrequently, avoid heavy nitrogen. Fall is the most productive window, with aeration, overseeding, and the year’s highest-value fertilization. Winter is intermittent mowing, debris clearing so turf isn’t smothered, peak moss pressure, and lime where needed.
HD Landscape and Maintenance LLC 6581 SW 192nd Ave Aloha, OR 97007
Phone: (971) 336-5520
Email: hdlandscapellc@gmail.com
Hours: Monday–Saturday, 7:00 a.m. – 7:00 p.m. · Sunday, Closed
License: Oregon LCB #9977
Serving Lake Oswego and surrounding areas including Lake Grove, Palisades, Mountain Park, First Addition, Old Town, and Glenmorrie, plus West Linn, Oregon City, Tualatin, and the greater Portland metro area.