I wanted to know if there is the possibility that the lantana flourishes again after a very cold winter in open and already pruned soil.
lantana is a small semi-evergreen shrub, native to Africa and Central and South America; in fact it is a fairly resistant plant, although in Italy it suffers a little during the winter, especially if it is a particularly cold season, like that of winter 2011-2012, in which the temperatures were decidedly lower than the seasonal averages, with late snow in most of Italy. Much depends on where you live, since the winter temperatures of Bolzano are very different from those of Modica; so it's not easy to tell you if your lantana survived the winter. The fact that it has completely lost its foliage, or that it is hard to sprout, may give no indication of your plant's state of health, since, although it is a semi-evergreen plant, it tends to lose its foliage in case of particularly unfavorable weather , such as very low temperatures, or particularly dry land; in the same way, a plant damaged by cold can wait for very high nocturnal temperatures before starting to sprout again. To make sure there is some hope, try cutting a few sprigs, to check that it is still green inside, and not dry or soggy. If you find the branches still green, your plant has some hope. If your lantana is now deceased, if you replace it, remember the next autumn to cover it with non-woven fabric, or rather to move it to a cold greenhouse (obviously growing the plant in a vase). In any case, potted lanthans often tend to lose enamel in the second year of cultivation, becoming very messy and producing few flowers, so they are often spent as annual plants.