Use this planting calendar to find the best times of the year to grow fruits, vegetables, herbs, flowers, and other popular plants in Sumpter, OR, based on the USDA Hardiness Zone 5b.
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Sumpter, OR Frost Dates & Growing Season
Last Spring Frost Date for Sumpter, OR
The average last frost date in spring for Sumpter is July 1st. For gardeners planting sensitive crops like tomatoes, peppers, and basil, it is generally recommended to wait until July 15th 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 Sumpter, OR
The average first frost date in fall for Sumpter is September 1st. 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 Sumpter, OR
Based on historical frost data, the estimated growing season length in Sumpter is approximately 62 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.
Sumpter, OR Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting your plants.
Sumpter, OR Monthly Planting Recommendations
May
In May, recommended activities include starting Marigold seeds indoors (from May 20th to June 3rd), starting Kale seeds indoors (from May 20th to June 3rd), and starting Basil seeds indoors (from May 20th to June 3rd).
June
In June, recommended activities include direct sowing Dill (from June 17th to July 1st), direct sowing Watercress (from June 3rd to June 17th), and direct sowing Mustard (from June 3rd to June 17th).
July
In July, recommended activities include direct sowing Nasturtium (from July 8th to July 15th), direct sowing Cucumber (from July 8th to July 22nd), and direct sowing Fenugreek (from July 1st to July 15th).