How to Plant and Grow Petunia
Plant Petunia Seeds: Sow petunia seed in cell packs or flats, press into soil but do not cover. Needs light to germinate. Kept at 70-75°F., seeds germinate in 7-21 days. Transplant petunia seedlings into the garden 7-18 in. apart.
Grow Petunia: Full sun or part shade. Part shade preferred in hot climates.