Applying EM-1 ® is very simple. You have two options. The first is to use it right from the bottle. The second is to make Activated EM-1 and cut your costs by 22 times! Just fill the reservoir of a hose-end sprayer with EM-1®, as you would with any fertilizer, and spray all your plants. One hose-end sprayer will treat about 1/8 acre. For best results spray once per week throughout the growing season and pre-treat all your organic matter (potting soil, peat moss, compost, etc.) with EM-1® (this is also known as a drench). Some hose-end sprayers let you dial in the dilution rates. You can use the rates suggested on our label to set the application rate. We suggest one ounce per gallon (2 TBS) for all plants. The best time to spray is early evening.