Bloom, hull split, veraison, and harvest windows for the six crops Lena knows best — timed to degree-day accumulation, not just the calendar month, because a warm spring shifts every stage earlier and a cold one pushes it back.
A fixed date like "spray for Navel Orangeworm in early July" is only right in an average year. Lena tracks accumulated growing degree-days (GDD) from a crop-specific base temperature and tells you where your actual orchard sits against the phenology model — so a warm March that pulls almond bloom two weeks early also pulls the hull-split spray window two weeks early with it.
The windows below are typical ranges for Central Valley conditions. Your farm's actual dates will shift with local microclimate, elevation, and the current season's weather — which is exactly what Lena adjusts for in the app.
A cool, wet spring delays bloom and pushes every downstream stage later — which can be good news for frost risk but bad news if it compresses your harvest window against fall rain. A warm winter with insufficient chill hours can cause uneven, staggered bloom in almonds and pistachios, which spreads out — rather than tightens — your spray and harvest timing. Lena's degree-day tracking is built to catch these shifts in-season rather than assuming last year's calendar repeats.
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