What's best will depend on your wants and needs. Gas-powered rotary lawn mowers can be divided into two categories: walk-behind rotary mowers and riding mowers lawn tractors.

The walk-behind rotary lawn mowers can further be classified according to whether they're push-type lawn mowers or self-propelled. Purchase price varies greatly between these types of rotary lawn mowers, with riding mowers / lawn tractors being the most expensive, followed by self-propelled mowers. The push-type mowers are the least expensive because they require you to provide the muscle to make them move.

Self-propelled rotary lawn mowers require the operator to squeeze a bar to engage the mower, which causes the machine to take off -- all you have to do is control the direction in which it goes. If you release your grip on the bar, the mower blade stops spinning.

For the higher-end self-propelled rotary mowers, the drive system does not shut off when you release the bar - a convenient feature, in case you'd like to transport the lawn mower from point A to point B without cutting grass along the way.

The difference between riding lawn mowers and lawn tractors lies in the location of the cutting deck. Lawn tractors have a mid-mounted cutting deck, while for riding lawn mowers the cutting deck is located under the front of the vehicle. The front-end location of the cutting deck on riding lawn mowers makes these machines more maneuverable. Maneuverability becomes an issue when, for instance, a lawn is dotted with shrubs and trees.

With both riding lawn mowers and lawn tractors you can make use of accessories ranging from brushes for spring cleaning to snow-removal attachments.

As with all lawn mowers, caution must be exercised when operating riding lawn mowers and lawn tractors. While providing them with a "vehicle" may seem like a great way to get the kids to mow the lawn without complaining, only those mature enough to handle heavy equipment should be allowed to operate riding lawn mowers and lawn tractors.

Choose a mower that's in your price range that meets the needs and standards that you have assigned to it. Go for comfort, though - in the long run, you'll be glad you did! Now that you've got the equipment, you're ready to put it to work!

Proper mowing, along with proper watering, can be the most critical factor in the appearance of a lawn. Good mowing techniques not only enhance the appearance of the lawn, but also increase the turf grass vigor.

There actually is a right and wrong time to mow. Most people just look at their lawns and decide if it's long enough to warrant a mowing, but you are going for that professionally landscaped look, so you need to pay heed to the expert's advice.

Lawn mowing should not be done when the grass is wet (under which conditions disease can be introduced, plus you incur the risk of slipping and getting injured).

Also, lawn mowing in the evening puts less stress on the lawn than lawn mowing when the sun is pounding down in the afternoon. Mowing during the heat of the day during hot weather may cause the lawn to brown. It is best to mow during the cooler part of the day.

Mowing frequency will change throughout the year with different weather patterns. Cool season grasses such as Kentucky bluegrass may require mowing twice a week in the spring, but only every 7-10 days in the summer. Warm season grasses such as Bermuda grass may need more frequent mowing in the summer than in the fall or spring.

Aesthetics aside, there's a good lawn-care reason not to wait longer in between mowing, each time simply mowing the lawn when the grass is higher and reducing the overall number of mowing. Sure, such a policy would reduce time spent on lawn care. But you get out of lawn care what you put into it.

It may come as a surprise that mowing the lawn is about more than just keeping your lawn's height under control. If done properly, mowing stimulates the grass of your lawn to lushness and better health, just as pinching a garden plant can improve its appearance. Proper mowing technique is an important aspect of overall lawn care.

So what is a proper mowing technique? Generally, you should alternate the direction in which you mow each lawn mowing session. You will thereby prevent your grass from "getting into a rut" (literally).

If your lawn mower wheels pass over the same area in the same direction each time you mow, they'll form ruts over time. Switching lawn mowing patterns also wisely avoids having the lawn mower blade beating at the grass in the same direction at every mowing.

Novices will just set the mower at the lowest setting to cut the grass as close to the ground as possible thus cutting down on the frequency of needing to mow. This isn't a good practice.

Certain grasses need to mown to a certain height to promote growth and healthiness. A general rule of thumb for almost all grasses is to mow to between 2 and 3 inches in height.

Height is important because the grass uses the extra length to absorb the sunshine it needs to grow and develop into a healthy plant. Never remove more than 1/3 at any one mowing. This may mean you'll have to mow more often during prime growing times (usually spring and early fall).

Turf grass stressed by mowing too low is more prone to disease, weed invasion, drought and traffic stress. Removal of most of the leaf blade limits food production. Limited food production decreases root, thizome, and stolon growth. Plants with limited food production and a limited root system will not have vigorous growth.

A vigorous, dense turf grass area is one of the best defenses against weed invasion. Weak grass plants with a limited root system are more prone to drought damage. It is particularly important to mow high during dry weather. Mowing height varies for different turf grass species:

Many turf grasses such as Kentucky bluegrass should be cut at 2 1/2 to 3 inches. Bentgrass and bermuda grass should be cut at 1 to 1 1/2 inches. Determine the type of turf grass in a lawn before recommending mowing heights. The grass should be mowed so that no more than 1/3 of the leaf blade is removed. If the desired height is 3", mow the grass when it has grown to 4".

If you let the grass grow too long and then mow it too low, scalping will occur on your lawn. When you do this, excess leaf blade tissue is removed. Such "scalping" of the lawn can cause severe visual damage.

More importantly, scalping shocks the grass plants and growth slows or stops, limiting the vigor of the turf. A scalped lawn may dry out quickly from drought, or may develop unusual weed and disease problems.

You will also want to make sure your mower blades are sharp. A dull mower blade shreds the tips of the grass blades. The shredding opens the ends of the leaf blades for increased moisture loss and potentially provides a site for disease invasion. Lawns cut with a dull mower blade may have an overall white appearance from the shredded grass blades.