This section will help you save money by showing you how to only use the fertilizer your plants need. Did you know that many of the soils in east Multnomah County are naturally high in Phosphorous? Many soils in Multnomah County are acidic and may need additives like lime to increase the pH level.
Understanding soil nutrients begins with a soil test. Find out how to take the sample and what tests to have here. There is a list of laboratories that can test your soil for nutrients in our Conservation Directory. The ‘Calculating the amount Needed’ section will help you turn the numbers from the lab into the amount of fertilizer needed.