According to House Beautiful – “Planting bee-friendly flowers is definitely an easy way to help keep our buzzing friends alive, and the sunflower is the perfect option for a summertime plant. They’re rich in nectar, and are the perfect color to attract bees—the flying insects actually can’t see reddish tinged colors, so sticking with yellow, blue, white, and purple flowers are especially helpful.
Sunflowers need optimal sunlight—around six to eight hours a day—and thrive when they grow in hot summer climates.”
Read more – https://www.housebeautiful.com/lifestyle/gardening/a27545572/save-the-bees-plant-sunflowers/