This is Agastache austromontana, also known as Annual Agastache, Bees favorite, Mexican Bee Balm, New Mexico Hummingbird Mint, Agastache astromontana, Agastache neomexicana, Monarda austromontana, and Monarda astromontana. Bees absolutely adore this plant which explains some of the common names for this plant, and the hummingbirds might like it just as much as the bees do. Mexican Bee Balm grows to about 2 feet tall and likes to live in full sun. Bees favorite is a fantastic nectar source for thousands of different butterflies. Mexican Bee Balm is grown as an Annual plant in most places, but it is a tropical tender perennial in USDA Hardiness Zones 7b to 11