A Bluegrass Pastoral pty Ltd Product
SprayCast
Stop guessing when to spray.
Know your best window — 7 days out, down to the hour.
Stop guessing when to spray.
Know your best window — 7 days out, down to the hour.
SprayCast is a spray forecast and record-keeping tool for farmers. It analyses weather conditions across the next 7 days and tells you when your spraying window is — before you even start planning.
Wind speed, wind direction, temperature, humidity, Delta T, rainfall probability — all the conditions that matter for effective and compliant spray application, rolled into one clear recommendation.
Available in Australia, New Zealand, USA, Canada and UK — with more countries coming. Your closest weather station, your actual conditions.
See spray conditions across the full week ahead so you can plan spray runs in advance, not scramble at the last minute. Each day is scored green, amber or red based on wind, temperature, humidity, Delta T and rain risk — so you know at a glance which days are worth planning for and which to skip.
SprayCast's algorithm analyses the full 7-day forecast and highlights your single best window to spray. Every condition is weighted and scored — wind, temperature, humidity, Delta T, rain probability — and the result is one clear recommendation. Stop second-guessing the forecast. SprayCast tells you when to go.
Drill into any day and see conditions hour by hour — so you know exactly when to load up and when to hold off. See wind speed, direction, temperature, humidity and Delta T plotted across every hour of the day. Pick your start time with confidence. Paid plan.
Australia uses the WillyWeather network for pinpoint-accurate BOM-sourced data. New Zealand, USA, Canada and UK are powered by Open-Meteo — high-resolution global forecasting down to your paddock. More countries coming.
SprayCast doesn't just show you a weather forecast. It analyses the conditions and tells you when to go.
Live forecast data from your chosen location. Australian stations use the WillyWeather BOM network. New Zealand, USA, Canada and UK use Open-Meteo high-resolution global data.
Wind speed, wind direction, temperature, humidity, Delta T and rain probability are all weighted to score spray suitability across every period of the forecast.
The algorithm identifies the single optimal spray window in the next 7 days — the period where conditions best line up for effective, on-label application.
On the paid plan, drill into any day for a full 24-hour breakdown — wind, temperature, humidity and Delta T charted hour by hour so you know exactly when to start and when to park up.
Too fast and you're drifting onto neighbours. Too calm and inversion conditions can carry spray unpredictably. SprayCast flags the sweet spot and warns when conditions are outside the safe range.
Know which way the breeze is heading before you start. Critical for paddocks near sensitive areas, waterways or neighbours.
High temperatures affect product efficacy and increase volatilisation risk. SprayCast shows you when temps are inside the label range for your product.
Low humidity speeds drying and can reduce uptake. High humidity helps some products. The forecast shows where humidity sits across every hour of the day.
Spray before rain and you've wasted product and time. SprayCast flags rain risk across the full 7-day window so you never get caught out mid-job.
Delta T is the key indicator of spray droplet evaporation risk — the difference between dry and wet bulb temperature. SprayCast calculates and displays Delta T so you know if conditions are ideal, marginal or unsuitable for application.
The free plan gives you the 7-day forecast summary and optimal window. The paid plan gives you every tool you need to plan, log, record and stay compliant.
Extended hourly forecasts so you can plan your spray runs with confidence. See exactly which hours are green, which are marginal, and which to avoid — for every day of the week ahead. Wind, temperature, humidity and Delta T charted hour by hour.
Record every spray job as you go — product, rate, water volume, paddock, operator, equipment and weather conditions. Every job logged in under a minute, straight from your phone in the paddock.
Photograph your product label and AI reads the batch number and expiry date directly into your job log. No typing, no transcription errors — just point, shoot and spray.
Current wind speed, temperature, humidity and Delta T pulled automatically into every job log at the time of application. Accurate conditions recorded without lifting a finger.
Access every registered herbicide for your country — complete with WHP, Safe to Graze dates and active ingredients — added directly to My Products so your logs fill themselves. AU, NZ, USA, CA and UK databases included.
Calculate your actual application rate based on boom width, speed and nozzle output. Get it right before you start — not after you've run out of mix three paddocks in.
Mix multiple products in one tank and SprayCast calculates the volume of each product needed for your tank size and target rate. Compatible products, correct volumes, every time.
Look up withholding periods and safe-to-graze dates for any product in the database instantly. Know before you spray when the paddock is safe to return to stock.
Generate spray job reports to send directly to clients, agronomists or auditors — branded, detailed and ready to sign. Export your full spray records as professional PDFs with a tap, straight from your phone.
SprayCast logs are structured to satisfy industry compliance and audit requirements — wherever you farm. Full amendment audit trail with timestamps means every change is on the record. When the inspector calls, you're covered.
7-day free trial included. No credit card required to start.
Get started with the 7-day spray forecast summary and optimal window recommendation — no sign-up required.
The full picture — every tool you need to spray smarter, log accurately and stay compliant.
Free for the 7-day forecast summary. $40 a year for the full hourly breakdown, job log, calculators and PDF reports.