Bee torpor

Bee torpor

Observation - Bee torpor - UK and Ireland. Description: I have planted this plant in the garden this year and it is very attractive to bees, however the bees seem to be overcome with torpor when on this plant, with individual bees staying on the same flowerhead for up to 6 hours. Is this normal ? None of the o

I have planted this plant in the garden this year and it is very attractive to bees, however the bees seem to be overcome with torpor when on this plant, with individual bees staying on the same flowerhead for up to 6 hours. Is this normal ? None of the other plants in the garden seem to have this effect on the bees.