If they were protected or it was mild, they would have a better chance. I grow them in a mass dirt tray then seperate them when they spout. I reintroduce to seperate tubs or pots. This is the time, where I start leaving them outside on sunny or warm days and bring them in at night. Then as soon as they are a foot big. I introduced them to the garden. I find I have an a big and good crop early and can plant the winter crop in August to early September. I grow cabbages in the same area. The beans add a lot of good things to the soil and the winter cabbages always go well as the butterfly population is dead or low when they began to grow properly. Two crops a year from one patch of land. The cycle means I use little fertiliser.