We seem to have a shortage of bees in our area. We are on the high plains in Colorado. The only thing that grows naturally is prairie grass and pine trees. I'm afraid we might have to get a hive and grow bees.
I have read that bees are attracted to blue flowers. The herb, 'Borage' has blue flowers and is known to attract bees. I'm going to be planting Borage throughout my garden.
I've got something for you that grows great in my area of Colorado...Japanese Spirea!
I have 5 plants in my garden and every late Summer when the it flowers it is COVERED in bees. I counted 5 complete different species last year from little tiny silver and black striped bees to huge bumble bees. I even had leaf cutter bees...unfortunately they were attacking the honey bees...but yeah...lots of bees.
Sorry I don't have better pictures, but this should give you the idea.
As gardeners rather than farmers, here's something to keep in mind: "Higher bee diversity and abundance occurs when gardens have a rich assortment of bee plants. It also appears that bees remain longer in a garden if plant diversity is high."
And, tolerate some weeds around your gardens. Okay, they could be in your neighbor's yard .
I can certainly attest to the bee attraction of the mints of every sort and those plants that have flowers in umbels. Sweet fennel and Queen Anne's Lace (wild carrot) are greatly appreciated by the bees in and around my garden. These plants are in the Apiaceae family. I found the word "Apiaceae" in an etymological dictionary: "derived from the Classical Latin word apis (bee . . .)" . . . of course!!
I just thought I'd come back to this very important subject and explain what I meant by saying, "As gardeners rather than farmers."
The horticulturalists talking about diversity brought to mind the fact that bees may have to fly for miles to find diversity in farming environment. And, perhaps in yours as well Beak, with only "prairie grass and pine trees."
On that UC Berkeley webpage however, note that having attractant plants in, at least, 1 square meter, area made a large amount of difference. Where there was only a tiny "spot" of something flowering that the bees appreciated, the flowers went ignored by our bee friends, for the most part.
It shouldn't take a huge area to bring in the bees but I can just imagine a patch of beebalm, ammi major, salvia and allyssum absolutely aswarm on a warm Summer day .
Coming back today also gives me the opportunity to use these smilies: :rainbow-sun :bee