Mom (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 best wishes to Mom. Zinnias have a long blooming season from spring through autumn. To encourage more blossoms, pinch off old blooms. Includes: seed, 100% biodegradable pot, growing medium, directions. Pots 4" high x 4.5" diam.