42 DAYS An exceptionally nutritious food, harvest when spinach leaves are full grown. Leaves are dark green, with a savory taste and have proven anti-cancer benefits. Try it raw in salads or in stir-fries. Make planting Bloomsdale Long Standing Spinach a cinch with handy 12 x 12 seed mats! Seeds are encased in biodegradable paper that protects the seeds during germination and dissolves in the course of watering. Simply place seed mat in the garden or in one of our Grow Tub™ containers and water. Create a unique square foot garden with no worries about over- or under-seeding!