Organix Weed Blitz is a new generation, wholly plant derived, knockdown and pre-emergent herbicide. Organix Weed Blitz herbicide is not a systemic herbicide but rather works by stripping the outer coating of contacted plant and seed material, causing cell collapse. Made entirely from plant sources, Organix Weed Blitz herbicide offers a host of user benefits. Does not harm soil microbia, no effect on birds, bees and earthworm populations. Organix Weed Blitz is not residual in the soil.