Miracle-Gro is by far one of the most popular fertilizer brands out there; even people who don’t own plants will recognize Miracle-Gro. Miracle-Gro can be a mixed bag of results, some plant owners will criticize it while others prefer it. Miracle-Gro can definitely work with a fiddle leaf fig. The company manufactures many different types of fertilizers, so be sure to select the right one. We recommend a liquid fertilizer with a 3-1-2 NPK ratio. If you are on the fence about using Miracle-Gro, we suggest starting with a smaller dosage in order to test how your plant reacts to a new brand.