Oregon Gardening Guide (2026)

Wet west side, dry east side. Mild, wet winters; cool-season lawn dominates.

⏳ Garden countdownToday: Sep 25

USDA 2023 zones + NOAA 1991-2020 frost normals. Estimates — check your local forecast before planting.

USDA hardiness zone
4–9
Region
Pacific West
Typical last spring frost
04/10
Typical first fall frost
10/25
Frost-free season
198 days
Lawn grass type
Cool-season

Quick answer (Oregon): Most of the state gardens in USDA zones 4–9 with about a 198-day frost-free window. Plan around the typical last frost of 04/10; start warm-season crops indoors ~6 weeks earlier. Source: USDA Plant Hardiness Zone Map (2023) + state cooperative extension typical freeze dates.

Your Oregon planting calendar

Pre-filled for Oregon. Pick a crop to see indoor start, sow/transplant, and harvest dates you can print.

In Oregon (typical zone 4–9), last frost ≈ Apr 10, first frost ≈ Oct 25 (198-day season), your Tomato plan:

Start seeds indoors
Feb 27
Sow / transplant outdoors
Apr 24
First harvest
Jul 3
Spacing / depth
24″ / 0.25″

Month-by-month (Oregon, 2026)

MonthAction
Jan—
FebStart indoors
Mar—
AprSow · Transplant
May—
Jun—
JulHarvest
Aug—
Sep—
Oct—
Nov—
Dec—

Start indoors 6 weeks before last frost; transplant after soil warms. Zones 3–13 suitable. Dates are typical; confirm with your county extension and watch the 10-day forecast.

Lawns in Oregon

Best grass types for your climate:

Kentucky BluegrassTall FescuePerennial RyegrassFine Fescue

Open the lawn care scheduler →

Common pests in Oregon

The pests most reported in your region, with organic-first treatments:

Slugs & SnailsAphidsLeaf-Footed BugGarden Snail

Slugs & Snails

Targets
Lettuce, hostas, seedlings
Signs
Ragged holes; silvery slime trails at night.
Organic / IPM first
Beer traps; diatomaceous earth; hand-pick at night; copper tape.
Chemical option (follow label)
Iron phosphate bait (low toxicity) or metaldehyde.
Prevention
Remove mulch/debris; water in morning not evening.

What grows well in Oregon

Crops suitable for zones 4–9:

CropTypeSpacingDays to harvest
TomatoWarm-season24″70
PepperWarm-season18″75
LettuceCool-season8″45
CarrotCool-season3″65
Green BeansWarm-season4″55
SpinachCool-season6″40
CucumberWarm-season12″55
ZucchiniWarm-season36″50
KaleCool-season12″55
BroccoliCool-season18″70

Figures are typical (30-year normals) from USDA and state extension services. Always confirm your local last/first freeze and product labels with your county extension before acting.

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