Annual. Lemon Queen is the sunflower variety being grown for a multi-year bee count project to gather information about native bee populations. More than 100,000 citizen-scientists across the U.S. and Canada participate in the research by counting the number of bees that visit their Lemon Queen plants. Bees and other pollinating insects are attracted to the nectar and pollen provided by the large, pale lemon yellow colored flowers with dark brown centers. Majestic, branched plants provide gorgeous cut flowers throughout the summer.