Fig trees produce on new growth like roses so you need nitrogen fertilizer to stimulate the new growth. Also, I've use a lot of super phosphate as this is the nutrient for flowering. I know that figs don't flower but it helped mine. Additionally a volunteer fig tree I had never produced, I had to buy a commercial variety. I finally, I cut back my tree a lot in the winter (not quite as much as a rose) and then I get a lot of new growth in the spring/summer.
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jjohn488
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