Use this planting calendar to find the best times of the year to grow fruits, vegetables, herbs, flowers, and other popular plants in Tigard, OR, based on the USDA Hardiness Zone 8b.
On this page:
Tigard, OR Frost Dates & Growing Season
Last Spring Frost Date for Tigard, OR
The average last frost date in spring for Tigard 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 Tigard, OR
The average first frost date in fall for Tigard 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 Tigard, OR
Based on historical frost data, the estimated growing season length in Tigard 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.
Tigard, OR Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting your plants.
Tigard, OR Monthly Planting Recommendations
February
In February, recommended activities include starting Lavender seeds indoors (from February 4th to February 18th), starting Broccoli seeds indoors (from February 18th to March 4th), and starting Aubergine seeds indoors (from February 18th to March 4th).
March
In March, recommended activities include direct sowing Chives (from March 18th to April 1st), starting Luffa seeds indoors (from March 4th to March 18th), and direct sowing Garden Cress (from March 18th to April 1st).
April
In April, recommended activities include direct sowing Hyssop (from April 1st to April 15th), direct sowing Swiss Chard (from April 1st to April 15th), and direct sowing Butternut Squash (from April 22nd to May 6th).