To have a perfectly manicured lawn, you'll need more than a mower. A string trimmer reaches the areas that you can't get with a mower -- along the fence, the flower beds, the patio area and trees. It uses a strong plastic string that whips around, slicing through grass and weeds. String trimmers typically range in price from around $30 to a couple of hundred dollars, so it doesn't have to break the bank, but it's smart to purchase the one that best meets your needs, rather than making the decision on price alone.
Getting Started
Start by determining what your needs are when it comes to a string trimmer. Make note of the areas you'll need to use it. Do you have a small yard with easy access to an electrical outlet, or will you take the trimmer far away from the house? Will you use the trimmer to cut through grass or coarse weeds? The answers to these questions will affect your purchase decision. Before you make a purchase, you'll also want to visit a store and "try out" the different ones available. While you won't be able to actually do some trimming in the home improvement store, you'll be able to test out the feel of the machine, and see first-hand how easy it is to control. For example, a gas-powered trimmer may be a bit too heavy for you to maneuver easily, and certain styles may be a poor fit for people who are tall.
Types
String trimmers come in two main varieties -- gas and electric. A gas-powered trimmer will typically have more power, and is ideal if you have a large yard that requires a lot of heavy-duty trimming, especially around fences. The 2-cycle gas-powered engine mixes gas and oil to use as fuel. A 4-cycle one does not mix the two, and is easier to start up. It's often a little more powerful. Electric trimmers are ideal for smaller yards, particularly when you are trimming around flower beds. Some versions have cords, while others make use of a rechargeable battery. A corded electric trimmer uses a power cord, and you'll need an extension cord long enough to reach the area that requires trimming. Battery-powered trimmers aren't hampered by the cord, but can lose power before you've finished the job. Before you make a purchase, ask about how long the battery will last and consider if that will meet your needs.
Features
All string trimmers will help trim grass and weeds from those hard-to-reach places, but some make the job a breeze. Models that have the engine mounted on the top are a bit easier to handle. These include all gas-powered models and some electric models. If you're worried about muscle strain, look for one that has a strap that allows you to carry it on your back or shoulder. The shaft is another area that could offer you features you need. String trimmers come with either a straight or a curved shaft. Straight shafts are ideal for tall users and have a longer reach than curved shafts. They also tend to be stronger. Curved shafts are often easier to maneuver, but they break more often. Alternatively, some shafts allow you to detach the trimmer and attach another tool, such as a leaf blower. Pay attention to the string that comes with the trimmer. Some models come with a string that unravels as you use it, though it can sometimes get tangled. Others require you to insert a new string periodically. Check out the replacement costs before you make any purchase, as you'll have to replace the string after some use.
Brands
Tool fans and home improvement junkies will recognize many of the brands that make string trimmers, such as Black & Decker, Husqvarna, Craftsman and Echo. John Deere produces string trimmers, but these are geared to the professional market and may have a bit more oomph than you need for your home. MTD is another company that makes trimmers; you'll find them under the names Troy-Bilt, Cub Cadet, Yard Machine, Yard Man and White Outdoor. You can find most of these brands at home improvement stores like Lowes or Home Depot, farming stores like Tractor Supply, online or direct from the dealer.
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