FrostCal

When to Plant Zucchini in Oregon

In a typical Oregon location, start seeds indoors Mar 13 – Mar 20, then sow outdoors Apr 10 – Apr 24, then transplant outdoors Apr 10 – Apr 17. Across the state, the outdoor planting window starts as early as Feb 18 in Beaverton and as late as Jun 16 in Altamont.

Method Direct sow
Days to maturity 45–55 days

Fast-growing squash; direct sow 1-3 weeks after last frost, or start indoors 2-3 weeks early for a head start.

Zucchini Planting Dates by City

CityStart indoorsDirect sowTransplant
PortlandFeb 4 – Feb 11Mar 4 – Mar 18Mar 4 – Mar 11
EugeneMar 21 – Mar 28Apr 18 – May 2Apr 18 – Apr 25
SalemMar 13 – Mar 20Apr 10 – Apr 24Apr 10 – Apr 17
GreshamFeb 23 – Mar 2Mar 23 – Apr 6Mar 23 – Mar 30
HillsboroMar 26 – Apr 2Apr 23 – May 7Apr 23 – Apr 30
BeavertonJan 21 – Jan 28Feb 18 – Mar 4Feb 18 – Feb 25
BendMay 16 – May 23Jun 13 – Jun 27Jun 13 – Jun 20
MedfordMar 18 – Mar 25Apr 15 – Apr 29Apr 15 – Apr 22
SpringfieldMar 21 – Mar 28Apr 18 – May 2Apr 18 – Apr 25
CorvallisMar 27 – Apr 3Apr 24 – May 8Apr 24 – May 1
AlbanyMar 27 – Apr 3Apr 24 – May 8Apr 24 – May 1
TigardMar 11 – Mar 18Apr 8 – Apr 22Apr 8 – Apr 15
AlohaJan 21 – Jan 28Feb 18 – Mar 4Feb 18 – Feb 25
Lake OswegoFeb 25 – Mar 4Mar 25 – Apr 8Mar 25 – Apr 1
KeizerMar 13 – Mar 20Apr 10 – Apr 24Apr 10 – Apr 17
Grants PassMar 18 – Mar 25Apr 15 – Apr 29Apr 15 – Apr 22
Oregon CityFeb 25 – Mar 4Mar 25 – Apr 8Mar 25 – Apr 1
McMinnvilleMar 15 – Mar 22Apr 12 – Apr 26Apr 12 – Apr 19
RedmondMay 19 – May 26Jun 16 – Jun 30Jun 16 – Jun 23
TualatinMar 11 – Mar 18Apr 8 – Apr 22Apr 8 – Apr 15
West LinnFeb 25 – Mar 4Mar 25 – Apr 8Mar 25 – Apr 1
WoodburnFeb 23 – Mar 2Mar 23 – Apr 6Mar 23 – Mar 30
Forest GroveMar 26 – Apr 2Apr 23 – May 7Apr 23 – Apr 30
NewbergFeb 28 – Mar 7Mar 28 – Apr 11Mar 28 – Apr 4
WilsonvilleFeb 25 – Mar 4Mar 25 – Apr 8Mar 25 – Apr 1
RoseburgMar 2 – Mar 9Mar 30 – Apr 13Mar 30 – Apr 6
Klamath FallsMay 19 – May 26Jun 16 – Jun 30Jun 16 – Jun 23
AshlandApr 15 – Apr 22May 13 – May 27May 13 – May 20
MilwaukieFeb 4 – Feb 11Mar 4 – Mar 18Mar 4 – Mar 11
BethanyMar 26 – Apr 2Apr 23 – May 7Apr 23 – Apr 30

Showing the 30 most populous of 68 Oregon cities. Dates are estimates from each city's NOAA frost normals and university extension timing guidelines. See all Oregon cities.

Frequently Asked Questions

When should I plant zucchini in Oregon?

In a typical Oregon location, start seeds indoors Mar 13 – Mar 20, then sow outdoors Apr 10 – Apr 24, then transplant outdoors Apr 10 – Apr 17. Across the state, the outdoor planting window starts as early as Feb 18 in Beaverton and as late as Jun 16 in Altamont.

When is the last frost in Oregon?

The average last spring frost in Oregon ranges from February 11 in Beaverton to June 9 in Altamont, based on NOAA 1991–2020 climate normals.

How long do zucchini take to grow?

Zucchini typically take 45–55 days from planting to harvest. Fast-growing squash; direct sow 1-3 weeks after last frost, or start indoors 2-3 weeks early for a head start.

Other Crops in Oregon

When to plant zucchini in other states

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