Get your lawn
dialed in.

How much fertilizer to apply to hit a target nitrogen rate — and whether you're about to burn the lawn. Per-application calculator plus a species-matched annual program planner.

Estimate how much lime to raise your soil pH — or elemental sulfur to lower it. Enter current pH, target, soil texture, and area; get pounds per 1,000 sq ft and a split-application schedule when the rate exceeds safe per-app limits.

Exactly how much topdressing to buy — cubic yards, bags, and weight for haul planning — without smothering the lawn. Deeper leveling jobs become a safe multi-pass plan.

Know exactly when to put down crabgrass preventer. Your local growing degree days, Michigan State's application window, and your projected application date — split timing included.

The right window to apply preventative grub control — by product. Live Japanese-beetle growing degree days, the apply-by window for your active ingredient, and an honest call on whether you even need to treat.

Daily dollar spot disease pressure from the Smith-Kerns weather model — know when conditions favor infection so you can act before symptoms appear.

Weather-based brown patch disease indicator — see how many of the past 5 days met the Rhizoctonia temperature and humidity thresholds, so you can adjust irrigation and mowing before circular patches appear.

Load every tank exactly right — multi-product cocktails, sprayer calibration, and the partial last load nobody gets right. Plus cost per 1,000 sq ft.

Know exactly when to reapply trinexapac-ethyl. Live weather, real growing degree days, and the reapply date before rebound hits.

Make one test pass, weigh what you applied, and see exactly how far off your spreader is — plus which way to adjust the dial. No universal setting exists; this tool measures what your equipment actually delivers.

Know if conditions are right to spray right now. Live Delta T from your local temp and humidity, the preferred 2–8 window, and an honest call that wind and inversions still matter.

Turn a label rate into what to measure: product per sprayer tank, tanks per lawn, and pounds of granular per 1,000 sq ft from the bag's active-ingredient percentage. Prodiamine 65 WG and T-Nex presets copied from EPA labels.

Turn your weekly water target into actual minutes per zone — using your system's measured precipitation rate. Catch-can helper and cycle-and-soak guidance included.

See what your lawn watering actually costs — gallons and dollars per week and per season, from your own water rate. Pairs with Sprinkler Run-Time for the minutes.

How many pounds of grass seed for a new lawn or an overseed? Enter your species and area — get a low–high pound range grounded in extension seeding rate tables.

Answer a few questions about your region, sun, traffic, and maintenance appetite — get a ranked shortlist of suitable grass species with honest tradeoffs. No score, no fluff.

Maryland bars homeowner lawn fertilizer from Nov 16 to Mar 1 and caps each pass at 0.9 lb N per 1,000 sq ft. See the caps and a 5,000 sq ft example.

Centipedegrass needs about 1 lb of nitrogen per 1,000 sq ft a year. Here is the extension math, the split plan and a 5,000 sq ft worked example.

Published lime rate tables have to assume a purity figure for the product you'll buy — and this calculator's own default (100% CCE) assumes a purer bag than typical ag lime actually is. Here's what CCE means, why it isn't the same as RNV or ECCE, and how to read your bag's guaranteed analysis before you buy.