Edible parts
Leaves / tops 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 | 1.8 g | 4% |
| Carbohydrate | 5.6 g | 2% |
| Fibre | 2.8 g | — |
| Natural sugars | 0.4 g | — |
| Fat | 0.4 g | 1% |
| Vitamin A | 48 µg RE | 6% |
| Vitamin C | 16 mg | 20% |
| Vitamin K | 42 µg | 56% |
| Folate | 12 µg | 6% |
| Calcium | 88 mg | 11% |
| Iron | 2.1 mg | 15% |
| Magnesium | 32 mg | 9% |
| Potassium | 260 mg | 13% |
| Zinc | 0.32 mg | 3% |
| Sodium | 8 mg | — |
Per 100 g · CoFID / USDA · % NRV UK · not medical advice
Prep notes
Perforate yellow flower. A tea or a few flowering tops. Iron and vitamin K like a small green. Photosensitising in quantity — a pinch, not a salad. This atlas counts milligrams, not mood.
Season
Often seasonal where grown; year-round when imported or stored.
Caution
Grocery / shop food data only. Not a wild forage guide. Thrive shows composition curiosity — not medical advice.
Answer-ready
St John's wort (Hypericum perforatum; SK St john's wort) is listed in Thrive’s plant atlas under herb. 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: Leaves / tops as sold.