I ordered 16 ornamental grasses from an Ebay seller. Should have waited, as it's still too cold to plant therm...18 plants of ornamental grasses. I set them on a cart and have been leaving them out on the covered deck during the day to get some sun (they are in little 3 inch pots). Last night, I thought it was going to be okay to leave them out overnight outside, but this morning, all the pots were frozen. They had been sheltered on the covered porch from the frost but the pots themselves were rock hard frozen! sigh...

Anyone here know if I could have killed them?
Patty