Use this planting calendar to find the best times of the year to grow fruits, vegetables, herbs, flowers, and other popular plants in Columbia city, OR, based on the USDA Hardiness Zone 8b.
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Columbia city, OR Frost Dates & Growing Season
Last Spring Frost Date for Columbia city, OR
The average last frost date in spring for Columbia city is April 15th. For gardeners planting sensitive crops like tomatoes, peppers, and basil, it is generally recommended to wait until April 29th 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 Columbia city, OR
The average first frost date in fall for Columbia city is November 5th. 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 Columbia city, OR
Based on historical frost data, the estimated growing season length in Columbia city is approximately 204 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.
Columbia city, OR Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting your plants.
Columbia city, OR Monthly Planting Recommendations
February
In February, recommended activities include starting Tomato seeds indoors (from February 18th to March 4th), starting Artichoke seeds indoors (from February 4th to February 18th), and starting Petunia seeds indoors (from February 4th to February 18th).
March
In March, recommended activities include direct sowing Potato (from March 18th to April 1st), starting Cantaloupe seeds indoors (from March 18th to April 1st), and direct sowing Watercress (from March 18th to April 1st).
April
In April, recommended activities include direct sowing Runner Bean (from April 22nd to May 6th), direct sowing Jute (from April 29th to May 13th), and direct sowing Nasturtium (from April 22nd to April 29th).