TurfLog

Lawn Care Tracker
Log Application
Select zones above or enter a custom area below.
Enter the numbers from the bag label. P and K are expressed as P₂O₅ / K₂O — converted automatically.
Saved!

Application Log

No applications logged yet. Use the form above to get started.

Annual Targets — YTD Progress

Progress toward your per-zone annual targets for nitrogen, Barricade 4FL, Tenacity, and PGR. Barricade 4FL and Tenacity are matched by product name in your log; PGR is matched by product type. Targets are set in Settings → Zone Configuration.

Zone Summary — YTD

Monthly NPK Applied (lbs/1k ft²) —

Zones:
1a
1b
2
3
Nutrient:

PGR Applications by Zone — YTD

Fungicide Applications by Zone — YTD

Herbicide Applications by Zone — YTD

Insecticide Applications by Zone — YTD

Biostimulant Applications by Zone — YTD

Yearly Summary

Zone-by-Zone Calculator

Enter a product analysis and rate to see exactly how much to apply to each zone. Toggle zones on/off to plan partial applications. Your zones: 1a (655 ft²) · 1b (1,185 ft²) · Zone 2 (1,500 ft²) · Zone 3 (1,400 ft²) · Total 4,740 ft².

Zone 1a655 ft²
Zone 1b1,185 ft²
Zone 21,500 ft²
Zone 31,400 ft²
ZoneAreaProduct Needed Lbs NLbs P (elem.)Lbs K (elem.)
Enter a rate and product analysis above to see the zone breakdown.

Liquid Rate Calculator

Calculate application amounts by zone for any liquid product. Enter a label rate in any unit — results shown in fl oz, tbsp, tsp, and mL per zone and for your whole lawn.

Zone Area fl oz tbsp tsp mL
Enter a rate above to see zone breakdown.
Dollar Spot
consec. high-risk hrs (threshold: 18)
Fetch data to calculate risk.
Smith-Kerns model · 70–95°F + RH ≥ 90%
Brown Patch
consec. high-risk hrs (threshold: 10)
Fetch data to calculate risk.
Night low >70°F + RH ≥ 90%
Pythium
conditions active flag
Fetch data to calculate risk.
>85°F + RH ≥ 90% for 6+ hrs

Disease Forecast

Hourly temp & humidity from Open-Meteo — past 7 days + 3-day forecast. Uses same zip as GDD & ET.

Change

Hourly Risk Heatmap

Low / none
Dollar Spot risk
Dollar Spot + Brown Patch
Forecast
No data — fetch disease data first.

Fungicide Recommendation

Based on current disease risk and your recent fungicide applications, here's what to consider next. Rotates away from recently used FRAC groups to manage resistance.

Fetch disease data to generate recommendations.

PGR GDD Status

Tracks growing degree days since your last PGR application. Most PGRs require reapplication at 150–200 GDD (base 50°F).

⚠ Reapplication threshold reached — consider applying PGR now.
◑ Approaching reapplication threshold.
Cumulative GDD
0
GDD base 50°F
Reapply Threshold
200
GDD base 50°F
Last PGR Application
No PGR logged yet
GDD Remaining
until reapplication
Days Since Last PGR App
0%
0200 GDD
Rolling GDD Accumulation
7-Day GDD
last 7 days
10-Day GDD
last 10 days
14-Day GDD
last 14 days
GDD°F — typical PGR reapplication: 150–200
50°F matches GreenCast standard

Auto-Fetch Temperatures

Enter your zip code and fetch daily high/low temps automatically from Open-Meteo (free, no account needed). GDD is calculated here at base 50°F.

Change
Manual Coordinates (if zip lookup fails)
Set manual coordinates in Settings → Location.
Manual Entry

Add or correct a single day manually.

GDD:
Reset Counter

Marks today as the new GDD start point after a PGR app. Does not delete temp history.

GDD Accumulation

Daily GDD
Cumulative GDD
Threshold

Daily Temperature Log

No GDD readings logged yet.

Product Intervals

Set a reapplication interval per product. Products from your log appear automatically, grouped by type. You can also add products directly within each type section below.

Intervals are saved automatically as you type.
Interval Tracker
OK Approaching Overdue Not set

Location

Your zip code is used by GDD, ET, and Disease forecasting. Set it once here — all weather tabs share it.

Saved!
Manual Coordinates (if zip lookup fails)
Find coordinates at latlong.net. If filled, these override the zip lookup.

Zone Configuration

Define your lawn zones — set the ID, nickname, square footage, and grass type(s) for each. Changes take effect across the entire app immediately after saving.

Target units:
Barricade 4FL
Tenacity
PGR
Saved!
Zone Summary

Application Calendar

Fertilizer
Fungicide
Herbicide
PGR
Biostimulant
Other