Kraków, Poland · 50.06°
Waterlogging in Kraków
In Kraków, 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 Kraków, next 48 hours
When conditions favour it in Kraków
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: humidity ≥90% · 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.
Fix the cause, not the leaf
No spray will help here. The trigger is soil, water supply, nutrition or temperature, so change the growing condition and judge the result on new growth, not on damaged leaves.
Scout the planting with humidity above 90%, after rain or heavy dew, while the leaves are still wet. Risk builds after roughly 24 unbroken hours of those conditions, so the morning after such a night is the moment to look.
Not contagious. Nothing spreads from plant to plant here. Neighbouring plants showing the same signs are reacting to the same soil, water or weather, so fix the cause rather than isolating plants.