The best way to determine if your lawn requires certain plant nutrients is through soil analysis. Testing is easy to do and inexpensive. The results returned to you will include your soil analysis and recommendations on the amounts of nutrients and lime that would be beneficial to your lawn. Soil samples may be collected at any time of the year, provided there has not experienced a prolonged period of drought and no nitrogen has been applied to the soil within the last thirty (30) days. If no samples have been taken within the last two years, samples should be taken as soon as circumstances permit.