Around here (S. England) Rosebay Willowherb or Fireweed (Chamaenerion
angustifolium) is an important summer bee flower with a striking
grey-blue coloured pollen.  I see it coming in every year in the summer.
Dorothy Hodges' book, "The Pollen Loads of the Honey Bee", shows the
following plants with blue pollen that bees have been known to collect:-
 
Siberian Squill        (Scilla siberica)
Garden Bluebell        (Scilla sp.)
Vipers Bugloss         (Echium vulgare)
Garden Campanula       (Campanula sp.)    Purple pollen.
Phacelia tenacetifolia
Queen Anne's Thimble   (Gilia capitata)
 
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Malcolm Roe                            Phone  :  +44 442 230000 ext 4104
Crosfield Electronics Ltd              Fax    :  +44 442 232301
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