Our lawns, or lack thereof, have finally emerged from under piles of dirty gray snow. But before you get out the fertilizer and lime, make sure you really need them. A test will tell you how much nitrogen, phosphorus, potassium and lime your soil needs to grow healthy plants. Depending on the condition of the soil, you may not even need to apply these nutrients. Contact your local Cooperative Extension office – (877) 398-4769 – or garden supply center for a soil test kit.