Demo: Hammonton blueberries. Predicted harvest date from growing-degree-day accumulation since bloom.
| Variety | GDD to harvest |
|---|---|
| Bluecrop | 1100 GDD |
| Duke | 950 GDD |
| Elliott | 1400 GDD |
| Jersey | 1300 GDD |
| Weymouth | 900 GDD |
GDD base 50°F. Daily accumulation uses (Tmax + Tmin) / 2 − base, floored at zero. Harvest projection extrapolates using the trailing 14-day average from Open-Meteo's NJ archive.
We'll fold harvest ETA into your daily digest alongside spray windows and disease pressure — so you know when to line up labor, bins, and packing.
Pre-harvest intervals get tight as the date approaches. Check disease pressure and your spray window before the clock runs out.
See disease pressure