2012 Best Planting Dates for Seeds for Tacoma, Washington

When determining the best planting dates for seeds, the date of the last spring frost is important to your success. NOTE: Our chart calculates U.S. frost dates only, based on historical data. Other factors can also influence planting dates, including soil temperature, altitude and slope of land, nearby waters, and day length. Keep records of your garden's conditions each year to plan more accurately.

  • Seeds for plants with a long growing season should be started indoors during the periods shown below.
  • Seeds for plants sown in the ground should be planted during the periods shown.
  • When no dates appear in the chart, that starting method is not recommended for the particular vegetable.
  • To start transplants, see our Best Dates to Transplant (by region).

Planting by the Moon?

Above-ground crops are planted during the light of the Moon (new to full); below-ground crops are planted during the dark of the Moon (from the day after it is full to the day before it is new again). Planting is done in the daytime; planting at night is optional!

This chart includes the most popular crops. For more information, consult your cooperative extension.

Click on the underlined crops below for free "how to" plant and grow guides!

ZIP Code or City,State

50% probability of frost free after April 21 (at MC MILLIN RESERVOIR, WA climate station).

CropStart Seeds IndoorsMoon-favorable DatesStart Seeds in the GroundMoon-favorable Dates
BeansApr 21-May 5Apr 21-May 5
BeetsMar 31-May 12Apr 7-20
BroccoliFeb 24-Mar 9Feb 24-Mar 8Mar 31-Apr 7Mar 31-Apr 6
Brussels sproutsFeb 24-Mar 9Feb 24-Mar 8
CabbageFeb 24-Mar 9Feb 24-Mar 8Apr 14-28Apr 21-28
CarrotsMar 17-31Mar 17-21
CauliflowerFeb 24-Mar 9Feb 24-Mar 8Apr 14-28Apr 21-28
CeleryFeb 24-Mar 9Feb 24-Mar 8
CornMay 5-12May 5
CucumbersMar 24-Apr 7Mar 24-Apr 6Apr 28-May 5Apr 28-May 5
LettuceMar 9-24Mar 22-24Apr 14-May 5Apr 21-May 5
MelonsMar 24-Apr 7Mar 24-Apr 6May 5-12May 5
Onion setsMar 24-31
ParsnipsMar 31-Apr 21Apr 7-20
PeasMar 9-24Mar 22-24
PeppersFeb 24-Mar 9Feb 24-Mar 8
Potato tubersApr 21-May 5
PumpkinsMar 24-Apr 7Mar 24-Apr 6Apr 28-May 5Apr 28-May 5
RadishesApr 14-28Apr 14-20
SpinachMar 9-24Mar 22-24
Squash, summerMar 24-Apr 7Mar 24-Apr 6Apr 28-May 5Apr 28-May 5
Squash, winterMar 24-Apr 7Mar 24-Apr 6Apr 28-May 5Apr 28-May 5
TomatoesFeb 24-Mar 9Feb 24-Mar 8