Fill a container with a soil-less seed starting or germinating medium. Pour water over it until it's drenched and then let it dry until it's moist.
Push the tangerine pimiento pepper seeds into the germination mix to the same depth as the seed's width and firm the medium over them.
Set the container on a 75 degree Fahrenheit heat mat in an area that is protected from direct sun. Water so that the top of the medium remains moist and expect your tangerine pimiento pepper seeds to sprout within three to eight days.
Begin hardening off the pepper seedlings a week before planting them out by cutting back on watering, waiting until the top 1/2 inch of soil is dry. Keep the temperature between 55 and 65 degrees and increase the amount of sun they receive gradually over the course of the week.
Obtain a soil test to determine how much fertilizer you need to add to the pepper planting bed. You may also need to add lime to adjust the soil's pH to between 6.0 and 7.0. Agriculturists with Oregon State University suggest that a pH of 7.0 produces maximum pepper yields.
Apply the starter fertilizer and lime to the soil as recommended by the soil test results. Spread the materials over the pepper bed and use a garden fork to mix them into the top 6 inches of soil.
Dig holes for the tangerine pimiento pepper seedlings so that they sit in the soil up to the bottom of the first leaf. Space the seedlings 12 to 18 inches apart in rows that are 36 to 48 inches apart.
Water the peppers enough to keep the soil barely moist. Allowing the soil to dry and then drenching it with water sets up conditions conducive to blossom-end rot, a common disease in tomatoes and peppers.
Fertilize the tangerine pimiento pepper seedlings when they bloom. Dig a shallow trench -- about 2 inches deep -- 3 inches to the side of each row of peppers. Sprinkle 2 ounces of nitrogen fertilizer per 100 square feet in the trench, fill it with soil and water to a depth of 6 inches. Repeat the application, using 1 ounce of nitrogen when the first peppers appear and again one month later.
Harvest the tangerine pimiento peppers 75 to 85 days after planting. You'll know they are ready when they turn a bright, tangerine-orange.