3. Plant the peppers.
Peppers like warmth, so wait to plant until nighttime temperatures have consistently reached 60°F and all danger of frost has passed. If possible, set out your peppers on a cloudy day to help reduce stress on the plants. Space the plants 12 to 20 inches apart, depending on the mature size of the variety, and set them a bit deeper than they were in their containers. (Like tomatoes, peppers grow extra roots from the buried portion of the stem.) Stake or cage taller varieties so that the stems do not break in strong winds or due to a heavy fruit load. After you plant the pepper seedlings, water them well.