Are you willing to change bee flower seeds ? I just like flowers and I have tried to collect plants suitable for bees near 40 years.
1977 we visited in Copenhagen Botanical Garden and I took nearby 50 different seeds from garden. It was late autum and gargen waited for frost. Still I have a couple of plants from there. One is Viola, 3 feet long stem. One is Tagetes 3 feet wide and 3 feet high, hundreds of flowers.
From England I have got some plants. Perhaps the best is Verbascum nigrum from Jugoslavia Lipwitche mountains 1983. It has good frowers and it gives pollen three weeks. Thousands of little flowers.
The new plant is Cephalaria gigantea from Siberia, 10 feets high. Never sawn that.http://home.tiscali.be/carine.bloemmen/cephalariagigantea.jpg
If you want to change seeds, post contact to me.