Use this planting calendar to find the best times of the year to grow fruits, vegetables, herbs, flowers, and other popular plants in San marcos, CA, based on the USDA Hardiness Zone 10a.
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San marcos, CA Frost Dates & Growing Season
Last Spring Frost Date for San marcos, CA
The average last frost date in spring for San marcos is February 1st. For gardeners planting sensitive crops like tomatoes, peppers, and basil, it is generally recommended to wait until February 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 San marcos, CA
The average first frost date in fall for San marcos is December 15th. 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 San marcos, CA
Based on historical frost data, the estimated growing season length in San marcos is approximately 317 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.
San marcos, CA Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting your plants.
San marcos, CA Monthly Planting Recommendations
January
In January, recommended activities include starting Pumpkin seeds indoors (from January 11th to January 18th), direct sowing Dill (from January 18th to February 1st), and direct sowing Poppy (from January 4th to January 18th).
February
In February, recommended activities include direct sowing Cantaloupe (from February 8th to February 22nd), direct sowing Butternut Squash (from February 8th to February 22nd), and direct sowing Chia (from February 15th to March 1st).
November
In November, recommended activities include starting Leek seeds indoors (from November 23rd to December 7th), starting French Lavender seeds indoors (from November 23rd to December 7th), and starting Lavender seeds indoors (from November 23rd to December 7th).
December
In December, recommended activities include starting Stevia seeds indoors (from December 7th to December 21st), starting Tomatillo seeds indoors (from December 7th to December 21st), and starting Tomato seeds indoors (from December 7th to December 21st).