"Verbena bonariensis gets my vote for favorite annual. Tall verbena (aka 'pencil plant"--feel the stem and you will know why) is one of the best bee & butterfly magnets you can grow, and it makes good cut flowers, too. Verbena bonariensis originates from South America,(Buenes Aires) and it thrives in heat and tolerates drought. The slender stems stand up to 4 feet tall. It makes a great
see-through plant and filler plant for the herbaceous border. Try it with Rudbeckias, Pennisetum grasses, or in front of Alma Potschke Aster. It fits in anywhere! And it self sows I just pick the
plants when they go to seed and shake them like magic fairy wands anywhere in the garden that I want them to grow! The monarchs will thank you!"