Amsterdam, Netherlands · 52.37°
Southern Blight in Amsterdam
In Amsterdam, the 2021–2025 archive records not a single hour meeting every threshold this disease needs. That does not make it impossible — it means the local climate does not favour it.
Risk in Amsterdam, next 48 hours
When conditions favour it in Amsterdam
Hours in an average month when conditions meet every threshold this disease declares (2021–2025). Faded bars are months the database does not list the problem as active.
This disease's thresholds: 25–35°C · humidity ≥80% · wet leaves / rain. Every hour in the archive was tested against them.
These come from the ERA5 reanalysis on a roughly 9 km grid, so they describe the area rather than your plot. A shaded, sheltered corner holds leaf wetness longer than open ground, so conditions there can favour it more often than the figure suggests. This is a climate profile, not a forecast — the panel above carries the current risk.
Treat, then re-check in 5–7 days
Pick off the worst material, apply the organic option below, and look again after five to seven days. If the spread continued, escalate rather than repeating the same treatment.
Scout the planting while temperatures hold between 25°C and 35°C, with humidity above 80%, after rain or heavy dew, while the leaves are still wet. Risk builds after roughly 6 unbroken hours of those conditions, so the morning after such a night is the moment to look.
Rain and irrigation splash. Water splashing off soil and infected leaves carries it upward and along the row. Watering at the base and mulching the soil surface break the route.