Mr. Greenthumb's 3 Step Fertilization Program: Step 1 : Slow Release Nitrogen, Applied in Late May or Early June - Step 2: Fertilize with Slow Release Nitrogen, Applied in Late July or Early August - Step 3: Fall & Winter Fertilizer with Slow Release Nitrogen, Applied in Late September.. Services Available: Mowing - Fertilizing - Thatching & Aeration - Mulch & Stones - Bush & Tree Trimming - Spring & Fall Clean Up - Storm Clean Up - Landscape Installation - Snow Plowing - Ice Melt Applications - Lawn Care - Turf Management - Tree & Shrub Care - Core Aeration,pH Balancing,Soil Enrichment,Preventive Grub Control,Flea And Tick Control,Fire Ant Control