Omnia SanaThis tool aids identification but does not replace an expert. Never eat a wild plant or fungus on the strength of a single feature. When in doubt, throw it out.
Evening Primrose can be confused with 1 dangerous plant/fungus. Check every distinguishing feature before you trust an identification.
All parts contain heart poisons; the non-flowering leaf rosette is easily mistaken for comfrey, mullein or borage, and ingestion causes nausea, disturbed colour vision and dangerous, potentially fatal heart-rhythm disturbances.
Confusable part: First-year basal rosette leaves gathered as an edible/medicinal; deadly foxglove forms a very similar first-year rosette.
Evening primrose (Oenothera biennis) is a biennial whose first-year rosette leaves (and later shoots and flowers) are eaten and used. As Totally Wild UK warns, a beginner could confuse the first-year rosette with deadly foxglove (Digitalis purpurea), because they share a similar first-year 'tick list' - both form rosettes of soft, pointed, sometimes pink-tinged leaves. Foxglove is potentially fatal: its leaves contain cardiac glycosides that disturb the heart rhythm. Because the rosettes are alike before either plant flowers, this is a genuine and potentially deadly confusion.
How to tell them apart
- Leaf hairiness and margin: foxglove leaves are softly hairy and much wider with a clearly serrated (toothed) margin and a net of sunken veins. Evening primrose leaves are narrower, far less hairy, with only a wavy (not toothed) margin.
- Midrib: evening primrose has a distinctive prominent white/pale midrib, often red-tinged; foxglove has a greyer, downier leaf with net veins.
- Best practice: do not eat any rosette leaf unless you have confirmed evening primrose (ideally seeing the plant's later stem or flowers); if the leaf is broad, soft-hairy and toothed, treat it as foxglove.
Compare the leaves. Narrow, nearly hairless leaves with a wavy margin and a bold white midrib = evening primrose. Broad, softly hairy leaves with a toothed (serrated) margin and net veins = foxglove - deadly, do not eat. If in any doubt, do not gather the rosette.
Educational identification aid compiled from the Omnia Sana plant database and cited botanical and toxicological sources. Not medical advice and not a substitute for expert identification.