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Growing It Local > States > Washington

State Information & Resources


Washington Master Gardeners Program

Volunteers who are available to answer gardening questions for free. Go to the Washington Master Gardeners website and click "I want to talk to a Master Gardener Volunteer", then click your county's name on the map to find information about local services including your local help line phone number.

Visit the Washington Master Gardeners Website


Washington State University Extension Services

The Washington State University Extension website is a  good resource for local farming and gardening information.

Click "Locations" at the bottom of the page for a list of local county websites.

Go to Washington Status University Extension Website


Washington Average Local Temperature and Rainfall Finder

These pages by "Find the Best" let you find average high and low temperatures for each month of the year and annual rainfall.

Enter a town, city, or zip code to see average temperatures for an area. Then click "See Details" next to a name to see a chart of average high and low temperatures for each month.

Check average temperatures for your area

Enter a town ,city, or zip code to see average yearly rainfall for your area.

Check average rainfall for your area


Washington Hardiness Zone Maps

This interactive hardiness zone map by PlantMaps lets you zoom to an area or enter a zip code to show the average low temperature for each area of the state. This is helpful in determining which plants will survive in your area and which will do well. For example, most apple varieties won't survive in zones 1 to 3 and won't do as well in zones 8 and above because summers are too hot and they don't get enough hours of cold temperatures in the winter.

** First and Last Frost Dates

Enter a zip code in the search box at the top and click "Zoom to Zip". A box will pop up with information including the Average First Frost and Average Last Frost for this zip code. This is critical in most areas for determining planting dates.

Go To the Washington Hardiness Zone Maps


Washington Heat Zone Map

This interactive heat zone map by PlantMaps lets you zoom to an area or enter a zipcode to see the number of days a year with temperatures over 86 degrees. This is useful for determining whether certain heat loving plants such as citrus will do well.

Go To Washington Heat Zone Map


Washington Agriculture

The state's largest crop is apples with 70% of US apple production. Other major food crops include wheat, potatoes, cherries, grapes, pears, hops, onions, and mint oil.

There are about 5000 wheat farms in Washington, mostly in Eastern part of the state. Nearly all are owned and operated by families.

The Washington Department of Agriculture website provides information for and about commercial agriculture.

Go to the Washington State Department of Agriculture Website