Komatsuna Seeds Kitchen Garden PackingKomatsuna, also known as Mustard Spinach, Japanese Spinach, or Tendergreen. Among her are all stages of the crop: young, flowering, gone to seed. Komatsuna is one of our favourite Asian greens. You can plant it from early spring through fall and eat the leaves, stems, and even flower heads; it survives the winter happily in an unheated tunnel or under row cover. You can use the leaves fresh when young. Wilt or braise when more mature for an unbeatably