Look Up Your Soil Temperature
Uses real-time data from Open-Meteo (NOAA/ERA5 models) — no account required.
Understanding Prodiamine Timing
The soil temperature thresholds that separate a clean lawn from a crabgrass disaster.
❄️ Below 45°F (3-day avg)
Soil is still cold. No crabgrass risk yet. Hold off — applying now means the product degrades before peak germination.
👀 45–50°F (3-day avg)
Watch window. Temps are climbing. Monitor daily. You're 1–2 weeks out in most Midwest climates.
🎯 50–55°F (3-day avg)
Apply now. This is the sweet spot. Crabgrass germination is imminent. Get prodiamine down before a warm rain.
🔴 Above 55°F (3-day avg)
Germination may have started. Apply immediately if you haven't. Consider a split app or higher rate to salvage the window.
Pro tip: The 3-day average is your trigger signal — it smooths out cold snaps and warm spikes.
The 7-day average tells you the trend. If both are climbing together, it's time to act. Check back daily once you hit 45°F.
