Landscape Design & Installation in Portland, OR

Quick answer

Landscape design and installation in Portland turns a plan into beds, trees, shrubs and hardscape that handle wet winters and dry summers. Good plans deal with drainage, use plants suited to zone 8b or 9a, and include summer watering for new plantings. In Oregon, landscape installation for pay requires a Landscape Contractors Board license.

Last updated October 22, 2026

A Portland landscape has to work in two very different seasons. From roughly October through May the ground is wet, sometimes waterlogged, and from mid-summer into early fall it can go weeks without meaningful rain. A good design plans for both: plants that tolerate wet roots in winter and dry soil in August, beds that shed water away from the house, and an irrigation plan that keeps new plantings alive through their first dry season.

What a design and installation project usually includes

Site visit. Sun and shade through the day, where water collects in the rainy season, soil texture, slopes, existing trees, and how you want to use the space.
Plan or sketch. Anything from a marked-up photo to a scaled drawing with a plant list. Ask what level of plan is included and whether design is billed separately.
Removal and soil prep. Taking out old lawn, ivy or blackberry, loosening compacted soil, and adding compost to beds based on a soil test.
Drainage and hardscape first. Paths, walls and drainage go in before plants so the new beds aren't trampled or buried.
Planting, mulching and irrigation. Plants set at the right depth, beds mulched, and drip or other irrigation installed for summer.

Plant choices for the Portland metro

Most of the metro falls in USDA hardiness zone 8b, and the 2023 map moved some warmer in-town ZIP codes into 9a. Higher elevations and the east side, which gets cold east winds out of the Columbia River Gorge, can run colder. Check your own address on the USDA map rather than relying on a metro average. Oregon State University Extension publishes plant selection and native plant resources for western Oregon, which are a good, non-commercial way to check a proposed plant list. Many designers here lean on natives and other summer-dry plants that need little water once established.

Plants to avoid

Some plants that have been sold for decades are now restricted in Oregon. English ivy and butterfly bush (except labeled sterile varieties) are on the Oregon Department of Agriculture's noxious weed quarantine, which limits their sale. Himalayan blackberry is a widespread invasive in the region. A good landscaper will help you remove these and replace them with plants that won't spread into neighboring yards or natural areas.

Licensing matters in Oregon

Unlike many states, Oregon licenses landscape construction. The Oregon Landscape Contractors Board (LCB) requires a license to do landscape construction work for pay, which includes planting, soil preparation and grading, irrigation installation and repair, drainage, and building patios, fences and walls. Routine maintenance such as mowing and pruning is not regulated by the state. Before you sign a design-build contract, look the company up with the LCB's online license verification.

Timing

In western Oregon, fall is a good time to plant trees, shrubs and perennials, because winter rains water them in and roots can grow before summer drought. Spring planting works too, but plan on regular watering through the first summer. Design can happen any time, and winter is a good season to plan and get on a company's schedule before the spring rush.

Questions to ask

What is your LCB license number, and can you provide a certificate of insurance?
Is design included, or is it a separate fee?
How will the plan handle winter drainage and summer watering?
Do you guarantee plants, and what voids the guarantee?

Ready to start? Request a landscaping company, or read our guide on licenses, permits and cost drivers first.

Frequently asked questions

Does a landscaper need a license in Oregon?

For landscape construction, yes. The Oregon Landscape Contractors Board requires a license for planting, soil prep and grading, irrigation, drainage, and building patios, walls and fences for pay. Routine maintenance such as mowing and pruning is not regulated by the state.

When is the best time to plant in Portland?

Fall is generally best for trees, shrubs and perennials in western Oregon, because winter rain helps roots establish before the dry summer. Spring works too if you can water regularly through the first summer.

Can I still plant English ivy or butterfly bush?

English ivy and butterfly bush are on the Oregon Department of Agriculture's noxious weed quarantine, which restricts their sale. Labeled sterile butterfly bush varieties are an exception. A landscaper can suggest non-invasive alternatives.

Sources and further reading

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