A calendar cannot tell you if it is time to fertilize. The key to knowing if your lawn is ready, is the overall condition. Here are a few ways to tell if your lawn is ready:
•your grass looks pale green
•has traces of yellowing
•is growing slowly, or not at all
•it has been more than 8 weeks since the last application
Proper selection and application of lawn fertilizers has a huge impact on the condition and appearence of your lawn, not to mention it can make your neighbors green with envy.