Use this planting calendar to find the best times of the year to grow fruits, vegetables, herbs, flowers, and other popular plants in Calwa, CA, based on the USDA Hardiness Zone 9b.
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Calwa, CA Frost Dates & Growing Season
Last Spring Frost Date for Calwa, CA
The average last frost date in spring for Calwa is February 25th. For gardeners planting sensitive crops like tomatoes, peppers, and basil, it is generally recommended to wait until March 11th 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 Calwa, CA
The average first frost date in fall for Calwa is November 20th. 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 Calwa, CA
Based on historical frost data, the estimated growing season length in Calwa is approximately 268 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.
Calwa, CA Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting your plants.
Calwa, CA Monthly Planting Recommendations
January
In January, recommended activities include starting Basil seeds indoors (from January 14th to January 28th), direct sowing Sweet Pea (from January 28th to February 11th), and direct sowing Lettuce (from January 28th to February 11th).
February
In February, recommended activities include direct sowing Carrot (from February 4th to February 18th), direct sowing Dill (from February 11th to February 25th), and direct sowing Hyssop (from February 11th to February 25th).
March
In March, recommended activities include direct sowing Melon (from March 11th to March 25th), direct sowing Chia (from March 11th to March 25th), and direct sowing Zucchini (from March 4th to March 18th).
December
In December, recommended activities include starting Oregano seeds indoors (from December 31st to January 14th), starting Tomato seeds indoors (from December 31st to January 14th), and starting Tomatillo seeds indoors (from December 31st to January 14th).