Effective delivery of an insecticide to a growing plant can sometimes be problematic. Topical delivery of an insecticide at the post-emergence stage of growth can sometimes be ineffective. It can also be difficult to deliver an insecticide to the roots of a growing plant, such as to combat a subsurface insect infestation. Accordingly, soil blends having insecticidal activity can comprise a soil medium, a porous soil additive, and an insecticide dispersed within the soil medium. Such soil blends may be used in conjunction with cultivating a variety of plants. Methods for producing the soil blends can comprise providing a soil medium and a porous soil additive, and dispersing the porous soil additive and an insecticide within the soil medium.
