Congratulations (Ageratum) These fluffy rounded blue, white and pink clusters of flowers will show your good wishes for weeks. A member of the Aster family they are easy to grow and long blooming. The blue of the flowers looks magical in twilight, so try to place them where they will catch the last diffused rays of the evening sun. Your seeds will germinate in 3-5 days and you can expect flowers within 90 days.