Where to buy Bell Pepper plants for sale. Bell pepper gardening can be trouble free when you plant in a sandy loam soil that has a pH 5.5 - 6.5. Bell Peppers are resistant to most garden pests. However to be on the safe side plant garlic in between your pepper plants. Bell Peppers need full sun and need to be in your garden 60 - 90 days. The longer the Bell Peppers stay on the plant the sweeter she will get and turn red. Plant many Bell Peppers in your garden and harvest a collection of different colors.