Use this planting calendar to find the best times of the year to grow fruits, vegetables, herbs, flowers, and other popular plants in Richfield, ID, based on the USDA Hardiness Zone 5b.
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Richfield, ID Frost Dates & Growing Season
Last Spring Frost Date for Richfield, ID
The average last frost date in spring for Richfield is May 29th. For gardeners planting sensitive crops like tomatoes, peppers, and basil, it is generally recommended to wait until June 12th 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 Richfield, ID
The average first frost date in fall for Richfield 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 Richfield, ID
Based on historical frost data, the estimated growing season length in Richfield is approximately 114 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.
Richfield, ID Planting Calendar
This weekly planting calendar displays the ideal windows for starting seeds, transplanting, and harvesting your plants.
Richfield, ID Monthly Planting Recommendations
March
In March, recommended activities include starting French Lavender seeds indoors (from March 20th to April 3rd), starting Lavender seeds indoors (from March 20th to April 3rd), and starting Geranium seeds indoors (from March 20th to April 3rd).
April
In April, recommended activities include starting Basil seeds indoors (from April 17th to May 1st), starting Thyme seeds indoors (from April 3rd to April 17th), and starting Pepper seeds indoors (from April 3rd to April 17th).
May
In May, recommended activities include starting Pumpkin seeds indoors (from May 8th to May 15th), direct sowing Fennel (from May 15th to May 29th), and direct sowing Radish (from May 1st to May 15th).
June
In June, recommended activities include direct sowing Nasturtium (from June 5th to June 12th), direct sowing Sunflower (from June 5th to June 19th), and direct sowing Cantaloupe (from June 5th to June 19th).