Thank You (Zinnia, Zinnia elegans) Dwarf zinnias are easy to grow beautiful plants with multi petaled flowers that bloom in a variety of bold colors. A growing expression of thank you that will remind the recipient of your gratitude. Zinnias have a long blooming season from spring through autumn. To encourage more blossoms, pinch off old blooms. Includes: seed, growing medium, coconut husks for drainage, directions. Bag 7" high x 6" wide.