The Best Zinnias In Vegetable Garden References. How to plant zinnias zinnias can be sown indoors from february until april, or sown outdoors directly into the soil in may. Zinnias are not only beautiful, but they attract pollinators as well.
Zinnias love sunshine and warmth. Big, beautiful, and productive, these zinnias are considered premium! If sowing in trays or modules, make sure you use free.
