Experts and BHG readers answer.
Do I need to do anything to the flower seedlings that I started indoors before I plant them outside?
It's a good idea to harden off tender seedlings before planting them in the garden, whether you've started them yourself or purchased them from a greenhouse. Gradually expose plants to more sunlight, cooler temperatures, and less moisture for a transition period of about 7-10 days. Place them in a protected location such as under a deck, in the shade of a tree, or next to the house. Seedlings transplanted directly to the garden may sunburn, wilt severely, suffer moisture stress, and possibly die.