6 Steps to Find and Use Your Last Frost Date

Your figurative tool shed should hold dates and gardening tools. Easy date, but we'll assist you garden. Find your region's important dates and arrange sowing and transplanting in six easy steps.

In April, temperatures will hit 32°F around your last frost. Scan zip codes with National Gardening Association Frost Date Calculator . Calculate average spring freezing and subfreezing dates.

Step 1 

Spring/fall date charts app. This calculator shows 36°F can damage plants despite 32°F frosts. We provide average seasonal temperature variation probability. Use bottom-left dates for vulnerable crops.

Step 2

Use the lower left dates on your date chart as your official last spring frost dates for simplicity. Find where the left column shows Last 32° and the top 10%.

Step 3

I recommend starting a garden notebook ASAP, regardless of your gardening experience. Marking dates and tracking local temps helps document planting. 

Step 4

We cannot forecast the weather, but we can plant species at safe times based on their needs. Brassicas, kale, lettuce, onions, and perennials thrive in spring. Tropical crops suffer from cold.

Step 5

If last frost is April 14, sow ‘Glacier Bush’ tomato seeds 4–6 weeks before transplanting. Transplant 1–2 weeks after last frost when air is above 45°F. Sorting by three dates:

Step 6 

Also See

What Are the Easiest Seeds to Grow in a Garden?