The spinach was first introduced by a farmer named David Ladreth in 1826. Bloomsdale Spinach was developed in 1874, by D. Landreth & Sons Seed Company. Although spinach is considered to be dioecious, which means that male and female flowers appear on separate, unisexual plants, the heirloom variety ‘Bloomsdale Long Standing’ was bred from a single monoecious plant and has thick, crinkly, dark green leaves that are packed full of flavors. 45 days.