How to grow ginger from grocery store rhizomes! . Ginger and Turmeric both grow really well in warmer climates. They do take 9-10 months to form new rhizomes but if the time between your two frost dates isn't that long you can pre sprout then inside along with your other seed starting! Then simply transplant them out into containers that can be brought inside if you get an early killing frost in the fall/winter. . Once you start producing enough rhizomes you won't ever need to buy ginger or turm