Saving zinnia seeds can be a cost effective way to grow these sweet and colorful blooms. Zinnias are annual flowers and will need to be replanted every year.
Zinnias grown from seed will likely look different than the original plant, as these will be hybrids. They may however be more beautiful than the parent plant.
Whenever you harvest zinnia seeds, it is always best to harvest from mature spent blooms. Allow the blooms to mature on the plant before removing the seeds.
Harvest time for zinnia seeds is when the zinnia flowers have been allowed to age on the stem and dry in place for at least a month or longer after blooming.
There is no rush to remove the seeds at this point, now that the blooms have been safely collected. You can set them aside to dry out further if needed.
Removing the zinnia seeds from the flowers is the next step. The first place you will find the seeds is at the end of the petals, where they are attached inside the flower.
From just one bloom you can collect multiple seeds in various shades of brown and beige. Most will be arrow shaped, although some will be oblong and slim as well.