How does the ashy mining bee provision its individual nest cells?

Answer

By provisioning the cell with a mixture of nectar and pollen before laying an egg and sealing it off.

The female excavates cells, fills them with a paste made from nectar and pollen, deposits an egg, and then seals the cell, after which she does not interact with the offspring.

How does the ashy mining bee provision its individual nest cells?
raritybeeMining Bee