Sweet banana peppers, along with bell, pimiento and sweet cherry peppers, are a warm-season vegetable and one of two types of peppers--the other is hot pepper. Sweet (or mild) peppers, like the banana pepper, typically require 70 days to harvest, according to the University of Illinois. Sweet banana peppers can be picked right off the vine when the peppers are yellow, orange or red and used raw or cooked in a number of recipes.
Select an area for growing banana peppers with full sun and well-draining soil. Plant sweet banana peppers when the temperatures at night do not drop below 50 degrees F.
Plan enough room to space the sweet banana pepper plants 18 to 24 inches apart in a row or at least 14 to 18 inches apart from other plants. Dig a hole the same depth as the container holding the sweet banana pepper transplants.
Place a banana pepper plant in each hole and backfill with removed soil. Soak the plants with water to settle the soil and remove any air pockets.
Supply enough water to the growing banana peppers throughout the growing season to moisten the soil to a depth of 6 inches, according to the University of Minnesota
Apply a starter fertilizer as directed on the product label when transplanting sweet banana peppers. Reapply a basic vegetable fertilizer to the growing banana peppers after fruits have begun to set.
Place a tomato cage (or other support) around each planted sweet banana pepper to help maintain the growing peppers. Cover the area around the banana pepper plants with 3 to 4 inches of mulch to preserve moisture in the soil and prevent weeds.