Use this planting calendar to find the best times of the year to grow fruits, vegetables, herbs, flowers, and other popular plants in Ajo, AZ, based on the USDA Hardiness Zone 9b.
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Ajo, AZ Frost Dates & Growing Season
Last Spring Frost Date for Ajo, AZ
The average last frost date in spring for Ajo is February 15th. For gardeners planting sensitive crops like tomatoes, peppers, and basil, it is generally recommended to wait until March 1st 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 Ajo, AZ
The average first frost date in fall for Ajo is December 10th. 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 Ajo, AZ
Based on historical frost data, the estimated growing season length in Ajo is approximately 298 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.
Ajo, AZ Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting your plants.
Ajo, AZ Monthly Planting Recommendations
January
In January, recommended activities include starting Marigold seeds indoors (from January 4th to January 18th), starting Moonflower seeds indoors (from January 4th to January 18th), and starting Brussel Sprout seeds indoors (from January 4th to January 18th).
February
In February, recommended activities include direct sowing Alyssum (from February 1st to February 15th), direct sowing Calendula (from February 1st to February 15th), and direct sowing Morning Glory (from February 22nd to March 8th).
March
In March, recommended activities include direct sowing Okra (from March 1st to March 15th), direct sowing Chia (from March 1st to March 15th), and direct sowing Sesame (from March 1st to March 15th).
December
In December, recommended activities include starting Rosemary seeds indoors (from December 7th to December 21st), starting Begonia seeds indoors (from December 7th to December 21st), and starting Stevia seeds indoors (from December 21st to January 4th).