Turfgrass Technical Reference Library
Comprehensive, evidence-based agronomic reference charts, compatibility matrices, and scientific standards compiled from university turf extension programs.
Turfgrass Seeding Rates & Germination Chart
Detailed seed counts per pound, optimum soil germination temperatures, new lawn vs overseeding rates, and emergence days for 10 turfgrass cultivars.
View Reference Chart →USDA Hardiness Climate Zone Turf Matrix
Complete climate compatibility matrix evaluating heat tolerance, freeze survivability, and shade limits across USDA Zones 3 through 10.
View Reference Chart →Fertilizer Application Schedules Chart
Month-by-month nitrogen application timings, annual nitrogen poundage caps, and winterizer windows for cool and warm season grasses.
View Reference Chart →Mowing Height & Frequency Reference Chart
Bench cutting heights, rotary vs reel mower recommendations, summer elevation rules, and active-growth mowing intervals.
View Reference Chart →Soil pH & Nutrient Availability Chart
Visual absorption curve showing how acidic or alkaline soils lock out nitrogen, phosphorus, potassium, calcium, and iron.
View Reference Chart →