Use this planting calendar to find the best times of the year to grow fruits, vegetables, herbs, flowers, and other popular plants in Hamilton city, CA, based on the USDA Hardiness Zone 9a.
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Hamilton city, CA Frost Dates & Growing Season
Last Spring Frost Date for Hamilton city, CA
The average last frost date in spring for Hamilton city is March 28th. For gardeners planting sensitive crops like tomatoes, peppers, and basil, it is generally recommended to wait until April 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 Hamilton city, CA
The average first frost date in fall for Hamilton city 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 Hamilton city, CA
Based on historical frost data, the estimated growing season length in Hamilton city is approximately 237 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.
Hamilton city, CA Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting your plants.
Hamilton city, CA Monthly Planting Recommendations
January
In January, recommended activities include starting Tomato seeds indoors (from January 31st to February 14th), starting Cauliflower seeds indoors (from January 31st to February 14th), and starting Impatiens seeds indoors (from January 17th to January 31st).
February
In February, recommended activities include direct sowing Lettuce (from February 28th to March 14th), starting Kale seeds indoors (from February 14th to February 28th), direct sowing Kale (from February 28th to March 14th), and direct sowing Sweet Pea (from February 28th to March 14th).
March
In March, recommended activities include direct sowing Carrot (from March 7th to March 21st), direct sowing Quinoa (from March 14th to March 28th), and direct sowing Gladiolus (from March 28th to April 11th).
April
In April, recommended activities include direct sowing Morning Glory (from April 4th to April 18th), direct sowing Chia (from April 11th to April 25th), and direct sowing Corn (from April 11th to April 18th).