The present application relates to a nanoparticle compositions and methods for targeted delivery of a bioactive agent to a plant. In one embodiment, the nanoparticle composition includes a coronatine-coated nanoparticle formulated to deliver one or more bioactive agent through plant stomata. A variety of bioactive agents may be included in the nanoparticles, including one or more bactericides, fungicides, insecticides, acaricides, miticides, nemanticides, molluscicides, herbicides, plant nutrients, fertilizers, plant growth regulators, or combinations thereof.
