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Crop Planting Dates in Columbia and Snake River valleys, Oregon

Published planting and harvest windows for 36 crops in Columbia and Snake River valleys, Oregon, in one calendar. Ranges only, with sources.

Windows in Columbia and Snake River valleys, Oregon
CropPlantingHarvest
BeetsPlanting: April
BroccoliPlanting: April
Brussels sproutsPlanting: April
CabbagePlanting: April
CantaloupesPlanting: May
CarrotsPlanting: April
CauliflowerPlanting: April
ChardPlanting: April
Chinese cabbagePlanting: August
EggplantPlanting: May
EndivePlanting: August
KalePlanting: May
KohlrabiPlanting: April
LeeksPlanting: April
LettucePlanting: April
Lima beansPlanting: April
OkraPlanting: May
Onion setsPlanting: April
ParsnipsPlanting: April
PeasPlanting: April
PeppersPlanting: May
Pickling cucumbersPlanting: April
PotatoesPlanting: April
PumpkinsPlanting: April
RadishesPlanting: April
RhubarbPlanting: April
RutabagasPlanting: April
Slicing cucumbersPlanting: April
Snap beansPlanting: April
Summer squashPlanting: April
Sweet cornPlanting: April
Sweet potatoesPlanting: May
TomatoesPlanting: May
TurnipsPlanting: April
WatermelonPlanting: May
Winter squashPlanting: April

Calendar view

Planting calendar for Columbia and Snake River valleys, Oregon
ItemJanFebMarAprMayJunJulAugSepOctNovDec
Beets plantingPlanting window in April
Broccoli plantingPlanting window in April
Brussels sprouts plantingPlanting window in April
Cabbage plantingPlanting window in April
Cantaloupes plantingPlanting window in May
Carrots plantingPlanting window in April
Cauliflower plantingPlanting window in April
Chard plantingPlanting window in April
Chinese cabbage plantingPlanting window in August
Eggplant plantingPlanting window in May
Endive plantingPlanting window in August
Kale plantingPlanting window in May
Kohlrabi plantingPlanting window in April
Leeks plantingPlanting window in April
Lettuce plantingPlanting window in April
Lima beans plantingPlanting window in April
Okra plantingPlanting window in May
Onion sets plantingPlanting window in April
Parsnips plantingPlanting window in April
Peas plantingPlanting window in April
Peppers plantingPlanting window in May
Pickling cucumbers plantingPlanting window in April
Potatoes plantingPlanting window in April
Pumpkins plantingPlanting window in April
Radishes plantingPlanting window in April
Rhubarb plantingPlanting window in April
Rutabagas plantingPlanting window in April
Slicing cucumbers plantingPlanting window in April
Snap beans plantingPlanting window in April
Summer squash plantingPlanting window in April
Sweet corn plantingPlanting window in April
Sweet potatoes plantingPlanting window in May
Tomatoes plantingPlanting window in May
Turnips plantingPlanting window in April
Watermelon plantingPlanting window in May
Winter squash plantingPlanting window in April
Frost-date caveat: published dates are averages. Find your own last and first frost dates and compare them with these ranges before you plant.

Last reviewed: November 2026. Source: OSU Extension april garden calendar.