Use this planting calendar to find the best times of the year to grow fruits, vegetables, herbs, flowers, and other popular plants in Calpine, CA, based on the USDA Hardiness Zone 6a.
On this page:
Calpine, CA Frost Dates & Growing Season
Last Spring Frost Date for Calpine, CA
The average last frost date in spring for Calpine is June 20th. For gardeners planting sensitive crops like tomatoes, peppers, and basil, it is generally recommended to wait until July 4th 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 Calpine, CA
The average first frost date in fall for Calpine is September 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 Calpine, CA
Based on historical frost data, the estimated growing season length in Calpine is approximately 92 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.
Calpine, CA Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting your plants.
Calpine, CA Monthly Planting Recommendations
April
In April, recommended activities include starting Cauliflower seeds indoors (from April 25th to May 9th), starting Pansy seeds indoors (from April 11th to April 25th), and starting Aubergine seeds indoors (from April 25th to May 9th).
May
In May, recommended activities include direct sowing Sweet Pea (from May 23rd to June 6th), direct sowing Parsley (from May 23rd to June 6th), and direct sowing Crimson Clover (from May 23rd to June 6th).
June
In June, recommended activities include direct sowing Gladiolus (from June 20th to July 4th), direct sowing Cosmos (from June 27th to July 4th), and direct sowing Hyssop (from June 6th to June 20th).
July
In July, recommended activities include direct sowing Okra (from July 4th to July 18th), direct sowing Lima Bean (from July 4th to July 18th), and direct sowing Watermelon (from July 4th to July 18th).