You can use foliar plant food after neem oil application. However, I would suggest applying the foliar plant food first, then apply the neem oil. If you have already applied the neem oil, apply the foliar feed fertilizer at the same time or after the neem has had time to coat the leaves of the selected plant.
Designed specifically as a plant spray. Contains active ingredients that will serve multiple purposes. Eliminates pests on yur plants, repels future pests, protecgs the plant’s leaves from the elements and future attacks. organic