Torrin from Apopka, Florida writes
To those people that see no change in a couple of weeks, the weed most likely had already germinated. IF, this is a “PRE” emergent… THEN, the root system will be heavily retarded in formation after and while germinating. You will see growth of the current generation, *IMPORTANT* but the next (if an annual type) will be blocked by your methodical application of subsequent applications. The weed's posterity/seedlings, will be reduced and hampered for future germination. If I'm mis informed, please request DoMyOwn to take this down. Best wishes to you all.
Answer last updated on: 08/08/2022