Don’t fertilize immediately after transplanting. To promote fruit growth on plants versus vegetative growth a fertilizer ratio of 5-10-10 is best. About a month before your area’s last frost date, move the peppers into a … Overwintering pepper plants is a great way to get a jump start on peppers for the next growing season. Wait around a week to allow the root system to integrate with the new soil. Peppers are medium to heavy feeders (depending on the variety planted and size of fruit produced), meaning they require more fertilizer than some plants during the growing season for optimum growth. Simply cut the peppers back to a few main Y shaped branches. For those of us who don’t live in that kind of climate, ... Read More about How to Overwinter Your Pepper Plants Then you can re-start your fertilizing regimen. Don’t worry, new branches will emerge and begin growing again when it’s time to bring the peppers out of dormancy in the spring! How Often to Fertilize Pepper Plants. We begin fertilizing immediately after the peppers germinate at a reduced strength. Many people are happily surprised to find out that peppers are actually a perennial plant if you live in a tropical or warm climate.