Double Fire Zahara Zinnia- Masses of fully double, 2-1/2 inch, fiery orange blooms cover these rounded 12 to 14 inch plants from spring to the end of the growing season. Zinnias are among the most easy-care flowers, requiring little garden maintenance. Zahara zinnias have proven leaf spot and mildew resistance. As a result, they reliably offer season-long performance, thriving in full sun and summer heat. Flowers 60 to 65 days from sowing.