Dahlias are available in single or multiple petal types with flowers ranging in size from small 3″ flowers to blossoms of 8″ or more. The multiple petal varieties are what is most commonly used in the floral trade. Dahlia petals wilt from the rear of the flower, slowly working towards the face of the flower. These rear petals can be removed as they expire without dramatically effecting the look of the flower. Vase life is generally 5 days.