Many years ago, I bought both Early St Ann and LA Early from "Sherwood's Greenhouses" in Sibley, LA (no longer open). Kept them in pots to move in when temps got into low 20s, so don't know for sure how low they can go. I did eventually lose the Early St Ann, but don't remember if cold exposure was part of the blame or not. I could not tell any difference between the two, so I wasn't too concerned and just grafted more copies of the remaining LA Early. Ever since then, I have never found any seeds in any of the fruits. I did find a seed or two during the first years, so I am suspicious that they may have come from the Early St Ann only.