For example, some weeds grow in situations of compacted soil, such as knotweed. You can also control growth by taking better care of grass, rather than focus on weeds. You can raise or lower mowing height, change frequency of mowing and changing amount of time between irrigating. Also, you can increase or decrease application of fertilizer and aerify soil. This will maintain better grass, thus keeping growth dense and vigorous, which as discussed above, does not attract weeds.

In addition to culture practices, sometimes assistance of chemicals is needed to control weed growth. In that case, there are several types of herbicides that can be used. Preemergence herbicides will affect seeds that are germinating. Since they are best used two to three weeks before seeds start to grow, these work best to combat annual weeds. Postmergence herbicides are used, as their prefix implies, after weeds have sprouted. Since they must be absorbed through leaves, this types of herbicide works best with a spray.

These can be used at any time, but are most effective when weed is still young and growing. Selective postmergence herbicides are usually used to control annual, biennial and perennial broadleaf weeds, as they will not damage grass. But, they can kill trees, shrubs and flowers. These have to be used in proper conditions as well, with no rain in forecast for two days to follow, air 60-80 degrees and no winds. Finally, non-selective postmergence herbicides kill all types of weeds, and are best used to spot treat grassy weeds that are not affected by selective herbicides.

So next time you see a Dandelion plant growing, don't make a wish and blow seeds toward in direction of a lawn fanatic- they may not get perfectly manicured lawn they wished for!

Liquid fertilizers are just as name says- in liquid form. These are applied by attaching a hose and nozzle to a spray bottle. The contents of bottle are usually in concentrated form, thus need to mix with water. If you can use a hose, this is an easy method, more so than spreading granular around yard. Also, since this a liquid, nutrients are available immediately to roots of your vegetation. Herbicides can also be added or applied during this treatment. But, since results are immediate, applications will have to be repeated more often than granular, and since liquid is more expensive to begin with, it can be more costly.

Synthetic fertilizers are usually manufactured chemically, hence being called synthetic. These engineered fertilizers offer immediate release of nutrients, and make lawns green.They simply penetrate soil quicker. However, they are not natural, and many argue that lawns should be treated naturally. Applications of synthetic fertilizer needs to be redone more often, as results don't last as long. They can also burn your lawn if not applied in a proper manner.

Finally, organic fertilizers are made from once living organisms and their bi-products. These are applied to lawn by spreaders, rakes and even by hand. Since this a totally natural fertilizer, organics tend to break down slow when releasing nitrogen. They will improve texture and density of your lawn, especially when added to soil or lakebed sand. There are some drawbacks however, including a foul smell in case of manures. Also, these soils tend to have more nitrogen than other elements.

In summary, when choosing a fertilizer, you need to consider many things: The current nutrition of your lawn, how much money you want to spend, how much labor you want to invest in application- initial and repeats, as well as personal preference. But with spurt in technology, choices keep growing as more combinations are being introduced.