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Situation

16.5.2025

Birch flowering continues in southern and central Finland as well as in Northern Ostrobothnia up to the Oulu region.
Alder flowering continues weakly in central and northern Lapland.

Grass flowering is expected to begin at warm growing sites in southern Finland within about two weeks.

Birch pollen levels are high in southern and central Finland, and in some areas even very high. In Northern Ostrobothnia up to Oulu, levels are mostly moderate.
Alder pollen levels are low in the flowering areas.