Planting zinnia seeds inside around five to seven weeks before the final spring frost is the best way to get your zinnia blooms started. Fill a seed tray, peat pots, or a flat with a starting potting mix to start your seeds off well. Use paper egg cartons as seed trays instead of plastic ones, which may be put directly in the garden with the seedlings as a less expensive option.
How do you plant dwarf Zinnias?
Zinnias are a terrific choice for container plantings, and the taller varieties provide a magnificent backdrop to any flower bed. Regardless of the kind of zinnia you pick, sow the seeds indoors as soon as possible to give yourself a head start on the flowering season. Begin sowing zinnia seeds four to six weeks before the final anticipated frost date.