There are lots of ways to tighten skin after you lose weight, and many reasons to do so. The loose skin can come from pregnancy or even just dropping a lot of weight at one time. While you might be at your goal weight, you might still feel bulky, and the culprit is loose, sagging skin.
Petunia seeds will germinate in 6 to 10 days, depending on type & color. Pink & White 1st, red last. Combine damp-off with water & let sit for a day to get to room temperature. Fill your seeding tray with damp soil mix. Water with warm water & let sit for a bit.
For best results, fertilize containers every five to six weeks. It is generally stated that petunias and Calibrachoa need full sun for best blooming, but they will flower nearly as well in partial sun, especially where summers are very hot and humid. Overall, six hours of direct sunlight will suffice.