SELECT city FROM table_name_52 WHERE plant_hardiness_zone = "2b" AND january = "−12/−23°c (10/-9°f)"
Di kota mana zona kekerasan tanaman 2b dan suhu Januari −12/−23 ° C (10/-9 ° F)?
CREATE TABLE table_name_52 (city VARCHAR, plant_hardiness_zone VARCHAR, january VARCHAR)