an annual Eurasian plant cultivated in North America having showy heads of blue or purple or pink or white flowers

an annual Eurasian plant cultivated in North America having showy heads of blue or purple or pink or white flowers

an annual Eurasian plant cultivated in North America having showy heads of blue or purple or pink or white flowers

an annual Eurasian plant cultivated in North America having showy heads of blue or purple or pink or white flowers