Gardeners often use garden sprayers to deliver both pesticides and herbicides to growing areas. Garden sprayers come in a variety of styles and sizes for every garden size and need. If you regularly apply both pesticides and herbicides to your garden, you may need a garden sprayer for each material to avoid chemical residues from remaining inside the sprayer tank and contaminating the tank contents. Once you use your garden sprayer several times, you should feel comfortable operating it to apply various materials to your garden.
Familiarize yourself with the garden sprayer prior to using it for the first time so you understand how it works. Most tank sprayers consist of a tank to hold the liquid you will spray on the growing area, a mechanism for pressurizing the tank and a wand for directing the spray onto the plants. The wand should have controls for starting and stopping the spray, as well as controlling the strength and pattern of the spray. Read the owner's manual completely, if possible, before using the garden sprayer to avoid any mishaps or mistakes.
Add the spray materials to the tank of the garden sprayer, diluting the materials with the proper amount of water. Notice the fill line on the tank, and do not overfill the garden sprayer. Fill the tank with only as much spray materials as you need for the size of your growing area to prevent leftover spray materials you would have to empty from the tank. Place the lid on the tank, and screw it on tightly. Mix the materials by inverting the tank or swirling the ingredients around in the tank.
Wear long sleeves and long pants, shoes that cover your entire feet, gardening gloves and eye protection before you pressurize the garden sprayer tank.
Pressurize the tank according to the garden sprayer design. Some garden sprayer designs require you to move the wheels to add pressure to the tank. Other sprayer designs may require pumping of some kind to add pressure. Most garden sprayers have a mechanism that will prevent you from overpressurizing the tank.
Position yourself near the area where you wish to apply the contents of the garden sprayer. Adjust the spray by turning the nozzle from a fine mist to a strong stream. Aim the wand where you want the materials to spray and start the spray.
Apply the spray to the growing area in the recommended amount for the size of the growing area. Continue to add more pressure to the tank as you use it. Spray the materials until you have applied the proper amount and the tank is empty.
Clean the tank, the wand applicator and all other parts thoroughly with water after you finish spraying. Never put the garden sprayer away without properly cleaning it.