Is zinnia a winter flower?
Zinnias begin flowering in late spring or early summer, typically June or July depending on where you live, and they will continue to bloom into fall and until the first frost. Zinnias bloom before Dahlias. Dahlias bloom after about 90 to 100 days and will bloom until your first frost. Depending on your zone (if your ground freezes) you have to dig them up before winter, divide and store them in a way they won’t dry out in your climate. In that respect they are harder than Zinnias.According to the Farmers’ Almanac—here’s what they say about how to clean zinnia beds in the fall: After zinnias flower, cut off the old flowers (a process called “deadheading”) to encourage more flowers to form. Zinnias are annuals and will die with the first hard frost of fall.