All 89 bee plants
Alder pollen
Alnus glutinosa
Greenish yellow to olive, in the green range.
FloweringFebruary to March
PollenFair
NectarNone
SeasonWinter, Spring
WhereWaterside, Woodland
Early catkins on wet ground. Pollen only.
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.
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.