Do Zinnia Flowers Come Back Every Year. Seeds from hybrid plants typically do not come true to the parent plant so if you love a specific attribute of the zinnia such as its double flowers or special colorings you might be disappointed by the offspring of hybrid zinnias. They die after each season and wont come back the following year without reseeding them.
Zinnia flowers can create a massive burst of color in your garden so consider trying them this year. These plants will reseed themselves every year. Store in a cool dry place as you do other seeds.
No they are true annual plants that will only live for one season.
Zinnias are very vulnerable to frosts and will die soon after the first frost. But if you want to save seed for fun or thriftiness you can select a few blooms to leave for harvesting. Simply let the flowers dry fully on the stem then collect the seedheads and lightly crush them in your hand to release next years seed crop. Plant zinnias in spring by sowing the seeds about 14-inch deep in.