Zinnia (Zinnia elegans) is a small annual grown for its colorful, round flowers. Flowers bloom from summer into fall until the first killing frosts arrive. Zinnias are hot weather plants that are normally started from seed or small plants. There are both small and large flower types and all add beautiful colors to the yard.
Zinnia foliage does not have any color change associated with fall. Instead they grow until the first killing frosts arrive. Then growth ceases and the plants appear to have been freeze dried and ready for dried flower arrangements. If you look closely you will remnant petal colors in reds,
maroon or whatever colors where being grown.
Leaves also cease growth at the first killing frost at which time they dry up
and die initially remaining attached to the tree.
Flowers and leaves eventually fall to the ground where they accumulate as mulch on the ground
As they decompose they add plant required nutrients back to the soil. When winds arrive remaining leaves and flowers will be stripped from the plant and drop to the ground.
Contact Trees That Please Nursery for more information and pricing.
Written By:Stephen Sain
Staff Plant Physiologist