Hopeful, I know the answers to your queery must be disappointing, but the truth must be told. The red clover is indeed great for the bumblebees. Honeybees have a significantly shorter tongue than the bombus and that is why they do not attend to nectar gathering from the red clover, the nectaries are too deeply set within the flower head. The short and long of it, but your neighbour will have lots of bumblebees for sure. Sorry to burst that bubble. Have a wonderful and great day. Cindi
Could you encourage your neighbour to grow something different, hee, hee :( ;) :)