Zinnia elegans. Large blooms of salmon tones on long, sturdy stalks make this zinnia an excellent choice for cut flowers. Heat tolerant, downy mildew resistant, and great for attracting beneficial insects over a long blooming period – most notably bumblebees and swallowtail butterflies. I love walking out into the zinnia patch in the morning and finding slumbering bumble bees drunk on nectar. Swallowtails arrive in the afternoon. 75-90 days.