You seem already to be in mid-summer over there in North America, if you suggest
that the blue pollen bees are collecting comes from phacelia or lilac. Here in
Finland we cultivate phacelia on reserve fields and still have to wait for the
sowing season perhaps 2-3 weeks. After this, we have to wait further 6 weeks
before the flowering begins. Lilacs bloom here in mid-June. The only plant here
giving blue pollen at this time would be Scilla sibirica grown in gardens. In
late summer (July-August) we get blue pollen from fireweed (Epilobium angusti-
folium).
 
Seppo Korpela
Agric. Res. Centre of Finland