Prevention Prevention keeps weeds from occurring or increasing in an area. Preventive techniques include planting high quality, weed-free Crops or grass seed. An important preventive measure related to control is to keep weeds from going to seed. This is important for annuals and biennials, because that is the only way they reproduce. Perennials reproduce from seed, as well as vegetatively from their root systems.
Annual weeds live for one growing season, biennials for two and perennials more than two.
However, preventing seed set is extremely important to keep perennials from starting new infestations some distance from existing ones. Eradication Eradication is the removal of weeds from an area so they will not recur unless reintroduced. If eradication creates an open area, one weed problem may be cured simply to create another one. If eradication is necessary, revegetate the ground to prevent another weed infestation. Control Control, the most common management strategy, reduces a weed population to a level where you can make a living off of or enjoy using the land.