Long story short I bought a 6x8 greenhouse and a couple of black 60gal plastic barrels for passive heat. Assuming I keep the temp above 60F year-round is it possible Lotus won't go dormant over the winter?

Don't worry about specifics, I will get a propane heater to supplement if needed, I can get a bigger surface area if it outgrows the barrel, I can supplement sunlight with grow lights, I could add a humidifer if needed etc...