Post-emergent organic herbicides are for killing a plant after it is established and growing in an undesired location. Most post-emergent organic weed control is in the form of sprays that are applied to the foliage of the weed. They burn back; destroy the cell walls of the plants leaves. These products are not systemic, meaning that they do not travel through the plant to kill the root. IamOrganic.com offers several types of post-emergent organic weed killers from manufacturers such as AgraLawn, EcoSMART, Green Light, Monterey Lawn & Garden, Natureís Wisdom and St. Gabriel's Laboratories.
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