sentences:  Apiculture classifies a plant as melliferous if it can be harvested by domesticated honey bees.The table below lists some of the known melliferous plants, and indicates the flowering period, as well as the resources harvested by bees (nectar, pollen, propolis, and honeydew).Each plant does not produce the same quantity or quality of these resources, and even among species the production can vary due to region, plant health, climate, etc.