https://lawnbysoil.com/Lawn care timed by soil temperature: when to apply crabgrass pre-emergent, seed or fertilize, plus free seed, fertilizer and sprayer calculators.en-ushttps://lawnbysoil.com/tools/sprayer-calibration-calculator/https://lawnbysoil.com/tools/sprayer-calibration-calculator/Wed, 11 Nov 2026 09:00:00 -0700Calibrate a backpack or pump sprayer for your lawn: gallons per 1,000 sq ft from a test area, how far one tank goes, and how much product to mix.https://lawnbysoil.com/tools/soil-temperature-lawn-planner/https://lawnbysoil.com/tools/soil-temperature-lawn-planner/Wed, 11 Nov 2026 09:00:00 -0700Enter your soil temperature, grass type and season to see whether it is time for crabgrass pre-emergent, seeding or fertilizer, with extension sources.https://lawnbysoil.com/tools/lawn-fertilizer-calculator/https://lawnbysoil.com/tools/lawn-fertilizer-calculator/Wed, 11 Nov 2026 09:00:00 -0700Turn a fertilizer bag's N-P-K numbers into pounds of product per 1,000 sq ft and for your whole lawn, plus how many bags to buy. Formula and example.https://lawnbysoil.com/tools/grass-seed-calculator/https://lawnbysoil.com/tools/grass-seed-calculator/Wed, 11 Nov 2026 09:00:00 -0700How many pounds of grass seed you need for your area: Kentucky bluegrass, tall fescue, fine fescue, ryegrass, bermuda or buffalograss, from extension rates.https://lawnbysoil.com/timing/when-to-seed-grass/https://lawnbysoil.com/timing/when-to-seed-grass/Wed, 11 Nov 2026 09:00:00 -0700The best time to seed cool-season and warm-season lawns, the soil temperatures that matter, and why late summer beats spring for bluegrass and fescue.https://lawnbysoil.com/timing/lawn-fertilizer-schedule/https://lawnbysoil.com/timing/lawn-fertilizer-schedule/Wed, 11 Nov 2026 09:00:00 -0700When to fertilize a lawn: Purdue's late-summer and fall plan for cool-season grass, feeding warm-season grass in summer, yearly nitrogen totals and rules.https://lawnbysoil.com/timing/how-to-measure-soil-temperature/https://lawnbysoil.com/timing/how-to-measure-soil-temperature/Wed, 11 Nov 2026 09:00:00 -0700How to take soil temperature readings that match the lawn research: depth, time of day, where to measure, thermometer types and reading the trend.https://lawnbysoil.com/timing/crabgrass-pre-emergent-timing/https://lawnbysoil.com/timing/crabgrass-pre-emergent-timing/Wed, 11 Nov 2026 09:00:00 -0700When to put down crabgrass pre-emergent using soil temperature: the 50–55°F window, the 55–58°F germination trigger, watering in, and seeding conflicts.