Edible parts
Vegetable flesh / as sold
Nutrition per 100 g
Food data (CoFID / USDA). % NRV is UK where a reference exists. Curiosity about the plant — not a diary score.
| Nutrient | Per 100 g | % NRV (UK) |
|---|---|---|
| Energy | 117 kJ / 28 kcal | 1% |
| Protein | 0.8 g | 2% |
| Carbohydrate | 6.5 g | 3% |
| Fibre | 2.5 g | — |
| Natural sugars | 1.8 g | — |
| Fat | 0.1 g | — |
| Vitamin A | 8 µg RE | 1% |
| Vitamin C | 72 mg | 90% |
| Vitamin K | 18 µg | 24% |
| Folate | 10 µg | 5% |
| Calcium | 32 mg | 4% |
| Iron | 0.6 mg | 4% |
| Magnesium | 18 mg | 5% |
| Potassium | 278 mg | 14% |
| Zinc | 0.15 mg | 2% |
| Sodium | 4 mg | — |
Per 100 g · CoFID / USDA · % NRV UK · not medical advice
Prep notes
Young spring shoots, rhubarb-sour, high vitamin C. Invasive — eat it. Skip anything thicker than a thumb, and never eat the woody older canes.
Caution
Grocery / shop food data only. Not a wild forage guide. Thrive shows composition curiosity — not medical advice.
Answer-ready
Japanese knotweed (Reynoutria japonica; SK Japanese knotweed) is listed in Thrive’s plant atlas under vegetable. Nutrition below is per 100 g with % NRV (UK) where a reference exists — food data for curiosity, not a diary score or medical claim. Edible part covered here: Vegetable flesh / as sold.