I live in the central part of NJ. I have a beautiful fig tree that hasn't produced one fig since planting four years ago. It is approximately 6 ft. high 5 ft. wide. Please advise about fertilizing and winter care, as well as pruning. The tree is healthy looking, but frustrating. I also have a 'Chicago fig' that I put in two years ago and this year it produced about 12 small figs. It is in a location that doesn't get as much sun. It was purchased at Lowes and I was advised it was bred to withstand cold weather, thereby the name 'Chicago fig'.
Fig Tree Fertilizing and Winter Care
Certified GKH Gardening Expert
Fig fertilization also depends on whether your plant is young or mature. For a young tree, fertilize in late winter or early spring. For mature fig trees, fertilize monthly from early spring until July. Use one-third pound of 10-10-10 per foot of plant height each time. A mature plant should develop only one foot of new growth each year.
As for winter care and pruning, these articles should help: https://www.gardeningknowhow.com/edible/fruits/figs/fig-cold-protection.htm