The availability of sufficient supplies of the appropriate nutrition (water, pollen, nectar, honeydew) is vital for the healthy and continuous development of bee colonies. Additional substances, such as propolis, are also needed.
Flowering plants that are visited by bees for feeding are referred to as bee pastures or nectar sources. The individual plant species are of varied significance for bees’ diets.
Thus, research projects on bee pastures make valuable contributions to biodiversity and provide alternatives to maize with the "energy plant" silphium.