I am starting my 2nd season and am currently solo. We operate as an LLC and I hope to hire at least some part time help by mid season. I plan to add fertilizer and pesticide applications to our service offerings this year and will be taking my certification exam next week. I am looking for any and all advice on how to really get this started from the operational aspect. Where to get materials (fert and pesticides)? What equipment do I really need? Issues/problems to look out for? Any help at all would be much appreciated.