Bok Choy is a must have for any garden or farm stand. A good choice for a main season green! They have good bolt tolerance. Because they come in and out quickly, we recommend planting every other week so you can pick different sizes and have a constant supply. Our packs contain about 350 seeds and each ounce pack has about 6,500 seeds. All our seeds are Heirloom and Non-GMO. Happy growing!!!