I am in central Florida and just purchased a jasmine (I think Confederate). I've planted it in a pot and am training it on a trellis. I used a mix of regular potting soil and some Miracle-Gro potting soil I happened to have around.
Within a day or two of planting, I noticed some caterpillars in the soil. They are brownish, kind of mottled, and about an inch or less long. I have not yet seen any caterpillars on the plant itself or evidence of defoliation but I'm a little worried. Everything I've read has said to use insecticidal soap, but it seems like these generally are sprayed on the leaves. I think I need to put something in the soil, but I'm afraid of damaging the roots of the plant.
Does anyone have any idea what these caterpillars might be or what I should do about them?