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City guide · Zone 9a

What to plant in Portland, Oregon

A full-sun bed in Portland: Dwarf panicle hydrangea 'Little Lime', Feather reed grass 'Karl Foerster', Garden peony 'Sarah Bernhardt', Purple coneflower, Two-row stonecrop 'Dragon's Blood'. Zone 9a, last frost around Mar 15.

Wet winters and warm, dry summers. Many Mediterranean and Northwest plants thrive.

Preview: plant data is awaiting horticulturist review. A professional horticulturist hasn't reviewed our plant table yet. Lists still follow fixed rules for zone, sun, pets, deer and invasive status.

Portland, Oregon at a glance

Hardiness zone (2023 USDA)
9a (ZIP 97204)
Typical last spring frost
Mar 15
Typical first fall frost
Nov 10
Spring planting window
After your last frost, until mid-April
Fall planting window
late October to mid-December
Annual rainfall (approx.)
36 in

Frost dates are typical metro values, not forecasts. Mild, wet winters and dry summers: winter wet and summer drought matter more than cold for many plants. Our lists for Portland use the rules for the Pacific Northwest.

Zone: USDA Plant Hardiness Zone Map, 2023 (USDA Agricultural Research Service; data by the PRISM Climate Group, Oregon State University). ZIP code to state data: GeoNames (geonames.org), CC BY 4.0.

A full-sun bed in Portland

6 or more hours of direct summer sun, 12 × 6 ft.

12 × 6 ft · Zone 9a · 6+ hours of sun · Cottage

Kinds

5

Plants

20

Coverage

89%

Mulch

9 bags

Mulch: 0.67 cu yd at 3 in deep (9 bags of 2 cu ft). Plants cover about 89% of the 72 sq ft bed when mature.

A part-shade bed in Portland

2 to 4 hours of direct summer sun, 12 × 6 ft.

12 × 6 ft · Zone 9a · 2–4 hours of sun · Classic

Kinds

5

Plants

30

Coverage

90%

Mulch

9 bags

Mulch: 0.67 cu yd at 3 in deep (9 bags of 2 cu ft). Plants cover about 90% of the 72 sq ft bed when mature.

A shady bed in Portland

Under 2 hours of direct summer sun, 12 × 6 ft.

12 × 6 ft · Zone 9a · Under 2 hours of sun · Classic

Kinds

5

Plants

26

Coverage

78%

Mulch

9 bags

Mulch: 0.67 cu yd at 3 in deep (9 bags of 2 cu ft). Plants cover about 78% of the 72 sq ft bed when mature.

Guides for zone 9

Questions and answers

What hardiness zone is Portland, Oregon in?
Central Portland (ZIP 97204) is in zone 9a on the 2023 USDA map: the coldest night of an average winter falls between 20°F and 25°F. Suburbs can be half a zone colder.
When is the last frost in Portland?
Typically around Mar 15 in spring and Nov 10 in fall. These are typical dates; any one year can be two weeks earlier or later.
When should I plant shrubs and perennials in Portland?
In spring, after your last frost, until mid-April; in fall, late October to mid-December. Fall planting gives roots a cool, moist season to settle before summer.
How many plants do I need for a 12 × 6 ft bed in Portland?
Our full-sun bed list for Portland uses 20 plants of 5 kinds, plus 9 bags of mulch.

How this page was made

This page was generated from FloraVista's plant table by fixed rules: the rules engine composed each list for the city's 2023 USDA zone, its region's summers and its state's invasive lists. The frost dates and rainfall are approximate metro values. No person or chat model chose these plants, and no named expert has reviewed this page.

Data status: the plant table is awaiting review by a horticulturist. Check each plant with a local nursery or extension office before you buy.

Sources

  • Missouri Botanical Garden Plant Finder, state extension services and the USDA PLANTS database (zones, size, sun, water, bloom, native range)
  • ASPCA toxic and non-toxic plant lists (dog and cat toxicity)
  • Rutgers NJAES and regional extension deer-resistance ratings
  • State noxious-weed and invasive-plant lists and the Invasive Plant Atlas of the US
  • Typical US garden-centre listings (pot size and price band)
  • USDA Plant Hardiness Zone Map, 2023. Agricultural Research Service, U.S. Department of Agriculture. Data by the PRISM Climate Group, Oregon State University.
  • ZIP code to state data: GeoNames (geonames.org), licensed under CC BY 4.0.

Generated . How FloraVista chooses plants