Acer platanoides beginning of flowering

            

Alopecurus pratensis beginning of flowering

              

Betula pendula beginning of flowering

              

Aesculus hippocastanum beginning of flowering

              

Syringa vulgaris beginning of flowering

              

Tilia cordata beginning of flowering

              

Corylus avellana beginning of male flowering

              

Alnus glutinosa beginning of male flowering

              

Salix caprea beginning of flowering

              

Artemisia vulgaris beginning of flowering

              

Fraxinus excelsior beginning of flowering

              

Forsythia suspensa beginning of flowering

              

Sambucus nigra beginning of flowering

              

Secale cereale beginning of flowering