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
Hydrangea paniculata 'Jane'
Structure · Back of bed · 3-gallon pot · 3.5 ft apart · grows 3–5 ft tall · Jul–Sep
Can't find it? Use Shrub rose 'Knock Out' or Weigela 'Wine & Roses'.
Calamagrostis × acutiflora 'Karl Foerster'
Grass · Back of bed · 1-gallon pot · 2 ft apart · grows 4–5 ft tall · Jun–Jul
Can't find it? Use Dwarf fountain grass 'Hameln' or Pink muhly grass.
Paeonia lactiflora 'Sarah Bernhardt'
Filler · Middle of bed · 2-gallon pot · 3 ft apart · grows 2.5–3 ft tall · May–Jun
Can't find it? Use Blue false indigo or English lavender 'Hidcote'.
Echinacea purpurea
Filler · Back of bed · 1-gallon pot · 1.5 ft apart · grows 2–4 ft tall · Jun–Sep
Can't find it? Use Anise-scented sage 'Black and Blue' or Lavandin 'Phenomenal'.
Sedum spurium 'Dragon's Blood'
Edge · Edge of bed · quart pot · 1 ft apart · grows 3–6 in tall · Jul–Aug
Can't find it? Use Creeping phlox or Cheddar pinks 'Firewitch'.
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
Gardenia jasminoides 'Frostproof'
Structure · Back of bed · 3-gallon pot · 2.5 ft apart · grows 3–4 ft tall · May–Jun
Can't find it? Use Inkberry holly 'Shamrock' or Korean boxwood 'Wintergreen'.
Athyrium niponicum 'Pictum'
Grass · Middle of bed · 1-gallon pot · 1.3 ft apart · grows 1–1.5 ft tall · Foliage plant
Can't find it? Use Autumn fern or Holly fern (invasive in Hawaii, New Jersey, South Carolina and Texas: don't plant it there).
Heuchera villosa 'Caramel'
Filler · Middle of bed · 1-gallon pot · 1.5 ft apart · grows 1–1.5 ft tall · Aug–Sep
Can't find it? Use Hosta 'Patriot' or Chinese astilbe 'Visions'.
Geranium 'Gerwat' (Rozanne)
Filler · Middle of bed · 1-gallon pot · 2 ft apart · grows 1.5–2 ft tall · Jun–Oct
Can't find it? Use Bleeding heart or Hosta 'Sum and Substance'.
Carex morrowii 'Ice Dance'
Edge · Edge of bed · 1-gallon pot · 1.3 ft apart · grows 0.75–1 ft tall · Foliage plant
Can't find it? Use Japanese sedge 'Evergold' or Mondo grass.
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
Aucuba japonica 'Variegata'
Structure · Back of bed · 3-gallon pot · 4.5 ft apart · grows 4–6 ft tall · Foliage plant
Can't find it? Use Dwarf yaupon holly 'Nana' or Soft Caress mahonia 'Soft Caress'.
Holly fern
× 3
Cyrtomium falcatum
Grass · Middle of bed · 1-gallon pot · 2 ft apart · grows 1.5–2 ft tall · Foliage plant
Listed as invasive in Hawaii, New Jersey, South Carolina and Texas in our table. Don't plant it there.
Can't find it? Use Japanese forest grass 'Aureola' or Autumn fern.
Astilbe chinensis 'Visions'
Filler · Front of bed · 1-gallon pot · 1.3 ft apart · grows 1–1.5 ft tall · Jul–Aug
Can't find it? Use Astilbe 'Fanal' or Hairy alumroot 'Caramel'.
Brunnera macrophylla 'Jack Frost'
Filler · Front of bed · 1-gallon pot · 1.5 ft apart · grows 1–1.5 ft tall · Apr–May
Can't find it? Use Hairy alumroot 'Caramel' or Lenten rose.
Carex morrowii 'Ice Dance'
Edge · Edge of bed · 1-gallon pot · 1.3 ft apart · grows 0.75–1 ft tall · Foliage plant
Can't find it? Use Hairy alumroot 'Caramel' or Japanese sedge 'Evergold'.
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
