Use this planting calendar to find the best times of the year to grow fruits, vegetables, herbs, flowers, and other popular plants in Shoreline, WA, based on the USDA Hardiness Zone 9a.
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Shoreline, WA Frost Dates & Growing Season
Last Spring Frost Date for Shoreline, WA
The average last frost date in spring for Shoreline is March 20th. For gardeners planting sensitive crops like tomatoes, peppers, and basil, it is generally recommended to wait until April 3rd before moving plants outdoors. Waiting these extra few weeks significantly reduces the risk of a late freeze damaging young transplants.
First Fall Frost Date for Shoreline, WA
The average first frost date in fall for Shoreline is November 15th. This date marks the approximate end of the growing season for tender plants. Gardeners should plan to harvest frost-sensitive vegetables or provide heavy protection (such as row covers) before this date to avoid crop loss.
Growing Season Length in Shoreline, WA
Based on historical frost data, the estimated growing season length in Shoreline is approximately 240 days. This duration determines which vegetable varieties have enough time to reach maturity before the winter cold sets in. Short-season varieties are recommended for crops that require a longer warm period.
Please note: These dates are climatological averages. Actual weather conditions vary by year. Always check the local 10-day forecast before planting.
Shoreline, WA Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting your plants.
Shoreline, WA Monthly Planting Recommendations
January
In January, recommended activities include starting Coneflower seeds indoors (from January 23rd to February 6th), starting Statice seeds indoors (from January 23rd to February 6th), and starting Rosemary seeds indoors (from January 9th to January 23rd).
February
In February, recommended activities include starting Pumpkin seeds indoors (from February 27th to March 6th), direct sowing Flax (from February 20th to March 6th), and direct sowing Radish (from February 20th to March 6th).
March
In March, recommended activities include direct sowing Milk Thistle (from March 6th to March 20th), direct sowing Babys Breath (from March 20th to April 3rd), and direct sowing Fennel (from March 6th to March 20th).
April
In April, recommended activities include direct sowing Mung Bean (from April 3rd to April 17th), direct sowing Sesame (from April 3rd to April 17th), and direct sowing Melon (from April 3rd to April 17th).