I grew these from seed under grow lights, transplanted them out in early April and watched them successfully weather nights in the high 40's, then a very wet Spring with 5 inches of rain over two days. They grew huge and ripened very early, with beautiful color, no blossom end rot, almost no cracking and INCREDIBLE heirloom flavor. Sweet, fruity, low acidity, very juicy. I grew them entirely organically in my raised beds with just a handful of organic fertilizer in the transplant hole and a regular tomato cage over the transplants. If you like heirlooms and big tomatoes with outstanding flavor, you cannot beat this variety. I highly recommend them.