Pint size pot. Annual but Zinnia's often readily reseed. Zinnia Northern Lights Mix produces large, 4- to 5-inch, vivid flowers in shades of pink, purple, and burgundy. These 24- to 36-inch tall, heat-tolerant, and easy-to-grow flowers are perfect for summer-long blooms, attracting pollinators while resisting deer. They are excellent for cutting gardens and thrive in full sun. Plant multiple to increase chances of mixed colors.