{"product_id":"niwaki-komatsuna-seeds-japanese-mustard-spinach","title":"Niwaki | Komatsuna Seeds | Japanese Mustard Spinach","description":"\u003cp\u003eRich in calcium, the spicy flavour of these dark green leaves increases with maturity. The crunchy stalks and tender leaves are excellent for salads, but can also be steamed, pickled, or added to soups and stir-fries. Grown in Japan since the 18th century, it was named after the Komatsu River in Edogawa, Tokyo.\u003c\/p\u003e\n\u003ch2\u003eBest usage\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSow from April-October and plant out from May-September.\u003c\/li\u003e\n\u003cli\u003ePlant in containers or on a windowsill in moist, well-drained soil.\u003c\/li\u003e\n\u003cli\u003eSow small amounts regularly for a steady supply.\u003c\/li\u003e\n\u003cli\u003eHarvest from May-November.\u003c\/li\u003e\n\u003cli\u003eAvoid prolonged exposure to extreme heat or cold.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Niwaki","offers":[{"title":"Default Title","offer_id":57254828999034,"sku":null,"price":3.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/8317\/files\/Screenshot2026-09-10at21.27.40.png?v=1789072161","url":"https:\/\/mmwstore.com\/products\/niwaki-komatsuna-seeds-japanese-mustard-spinach","provider":"MMW at Revolver | On land, at sea \u0026 everything in between","version":"1.0","type":"link"}