I wanted to fertilize my lawn now. I have two different bags of fertilizer and don't know if either one are correct. One is a 6-24-24 mix from Southern States. The other is 17-0-0 from Spring Valley. Are either of these good for a fall or winter use? Would it be better if I brought in a soil sample to analyze?
Great question! Fall is the best time to fertilizer your lawn and trees. The first number is the fertilizer ratio is Nitrogen, which is for green growth. The 17-0-0 would be your best bet. It's recommended at a rate of 1-1.5 lbs/1000ft2. Yes soil sampling is important, but we do not test Nitrogen due to its quick movement and uptake by the plants. We test soil pH and other macro-nutrients. If in the future you decide to test, fall is also the best time and all Campbell Co. residents receive free samples. Reach out to me for further details about testing. Below are a few helpful links about lawn maintenance: