I live in Feodosia. The city is open to the north winds. Winters here are quite cold for citrus. Almost always in winter there are several nights with -10 ... -12°C, once in several years it can be -15°C, once in ten years it can be up to -18°C, and once in thirty years it can be colder than -20°C. I have been growing keraji, changsha, Rusk, Margarita for two years in the ground, but I hide them. Keraji is now giving the first harvest. Changsha and Rusk are not bearing fruit yet. This year, fresh grafts of Morton, US-119, citrandarin FA-5 will be wintered.