All 89 bee plants
Field scabious pollen
Knautia arvensis
Dark brick orange-red, in the red range.
FloweringJuly to September
PollenGood
NectarGood
SeasonSummer, Autumn
WhereFarmland, Waste and verge, Hedgerow
That deep brick red load on the leg is a fair giveaway, and they can bring it in by the bucketful.

Easy to mistake for these
Closest pollen colours in our set, measured the same way the pollen identifier scores a match. Colour alone will not settle it, so check the flowering months and what is actually growing near your hives.
Confused with in the field
Noted by name in our own records, rather than worked out from the colour.
Out at about the same time
Saw a load like this going in?
Sample the colour against all 89 plants, then keep a forage record per hive.