Weather too cold to plant now?
I live in Zone 8, which is Central Texas and I just purchased and planted a bunch of lovely snapdragons outside in a pot. Today is March 7, 2017 and it is supposed to be 40 degrees tonight. Will these plants be OK or should I cover them? I don't know how to send photos and I am DEAF so you cannot call me.
Snapdragons can tolerate a light frost, so 40 degrees should be fine.
Your plants may not grow much in the cool weather. You can put some hardwood mulch around the plants to help keep the soil warm.