Use this planting calendar to find the best times of the year to grow fruits, vegetables, herbs, flowers, and other popular plants in Coos bay, OR, based on the USDA Hardiness Zone 9a.
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Coos bay, OR Frost Dates & Growing Season
Last Spring Frost Date for Coos bay, OR
The average last frost date in spring for Coos bay is April 20th. For gardeners planting sensitive crops like tomatoes, peppers, and basil, it is generally recommended to wait until May 4th 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 Coos bay, OR
The average first frost date in fall for Coos bay is December 10th. 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 Coos bay, OR
Based on historical frost data, the estimated growing season length in Coos bay is approximately 234 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.
Coos bay, OR Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting your plants.
Coos bay, OR Monthly Planting Recommendations
February
In February, recommended activities include starting French Lavender seeds indoors (from February 9th to February 23rd), starting Lavender seeds indoors (from February 9th to February 23rd), and starting Stevia seeds indoors (from February 23rd to March 9th).
March
In March, recommended activities include starting Basil seeds indoors (from March 9th to March 23rd), direct sowing Spinach (from March 9th to March 23rd), and direct sowing Watercress (from March 23rd to April 6th).
April
In April, recommended activities include direct sowing Milk Thistle (from April 6th to April 20th), direct sowing Quinoa (from April 6th to April 20th), and direct sowing Lemon Balm (from April 20th to May 4th).
May
In May, recommended activities include direct sowing Butterfly Pea (from May 4th to May 18th), direct sowing Melon (from May 4th to May 18th), and direct sowing Mung Bean (from May 4th to May 18th).