Use this planting calendar to find the best times of the year to grow fruits, vegetables, herbs, flowers, and other popular plants in Black diamond, WA, based on the USDA Hardiness Zone 8b.
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Black diamond, WA Frost Dates & Growing Season
Last Spring Frost Date for Black diamond, WA
The average last frost date in spring for Black diamond is May 5th. For gardeners planting sensitive crops like tomatoes, peppers, and basil, it is generally recommended to wait until May 19th 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 Black diamond, WA
The average first frost date in fall for Black diamond is October 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 Black diamond, WA
Based on historical frost data, the estimated growing season length in Black diamond is approximately 163 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.
Black diamond, WA Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting your plants.
Black diamond, WA Monthly Planting Recommendations
February
In February, recommended activities include starting Petunia seeds indoors (from February 24th to March 10th), starting Snapdragon seeds indoors (from February 24th to March 10th), and starting Lavender seeds indoors (from February 24th to March 10th).
March
In March, recommended activities include starting Luffa seeds indoors (from March 24th to April 7th), starting Ground Cherry seeds indoors (from March 10th to March 24th), and starting Aubergine seeds indoors (from March 10th to March 24th).
April
In April, recommended activities include direct sowing Alfalfa (from April 7th to April 21st), direct sowing Cilantro (from April 21st to May 19th), and starting Pumpkin seeds indoors (from April 14th to April 21st).
May
In May, recommended activities include direct sowing Mung Bean (from May 19th to June 2nd), direct sowing Lima Bean (from May 19th to June 2nd), and direct sowing Black Bean (from May 19th to June 2nd).