Elder Flowers in May: The Forager’s Anti-Inflammatory and What the Polyphenol Research Says
If you are in the UK right now and you have not yet looked up at the hedgerows, look up. The elder is in full bloom — and for those of us who forage, this is one of the most anticipated weeks of the year. The creamy white flower heads are unmistakable: flat-topped clusters of hundreds of tiny florets, carrying that distinctive sweet, almost honeyed scent that means summer is genuinely on its way.
But beyond the pleasure of finding them, elderflowers are worth understanding from a nutritional science perspective. A 2026 paper published in Nutrients — Mózes N et al., “Dietary Polyphenols in Brain Aging: Molecular Mechanisms and Implications for Neurodegeneration” — provides some of the clearest recent evidence yet for why polyphenol-rich wild foods deserve a serious place in any conversation about healthy ageing and cognitive protection.
How to identify elder
Sambucus nigra — common elder — is one of the easier plants to identify with confidence, which makes it a good starting point for anyone new to foraging. It grows as a large shrub or small tree, reaching up to ten metres, and is found along hedgerows, woodland edges, riverbanks, and disturbed ground throughout the UK. In May and early June, it is in full flower.
The flowers grow in large, flat-topped clusters called corymbs — typically eight to fifteen centimetres across — made up of dozens of individual five-petalled florets. Each tiny flower is creamy white to pale yellow, with prominent yellow stamens. The scent is sweet and floral, faintly musky. The leaves are pinnate with five to seven oval leaflets, and the stems are woody with a pithy centre — you can push a pencil through an elder stem quite easily, which is a useful confirmation.
The main confusion species is hogweed (Heracleum sphondylium), which also has white flower clusters, but hogweed is herbaceous (no woody stem), the flowers are arranged differently, and the plant has a distinctly unpleasant smell when the stem is crushed. Elder has no such smell from the stem — only the flowers are fragrant. If in doubt, do not pick.
When and how to pick
Pick on a dry morning after the dew has lifted — the fragrance is strongest then and the florets are at their best. Choose flower heads that are fully open but not yet browning at the edges. A few heads still in bud in the cluster is ideal. Avoid anything near busy roads, recently sprayed hedgerows, or polluted water.
Cut the whole flower head with a few centimetres of stem using scissors or secateurs. A carrier bag or a wide, shallow basket works well — elderflowers bruise easily if packed too tightly. Pick no more than a third of the flowers from any one plant, and never strip a single tree bare.
The polyphenol science: what elderflowers contain
Elderflowers are rich in several classes of polyphenols — plant compounds that interact with human biology in ways that go well beyond basic nutrition. The primary flavonoids in Sambucus nigra flowers include quercetin, kaempferol, rutin, and isorhamnetin. These are not obscure compounds. They are among the most studied dietary polyphenols in the scientific literature, and the evidence base for their biological activity is substantial.
Quercetin, in particular, has been the subject of considerable research in the context of neurological health. The 2026 Nutrients review by Mózes et al. summarises the current mechanistic understanding clearly: dietary polyphenols including quercetin and kaempferol cross the blood-brain barrier, reduce neuroinflammation by inhibiting NF-κB signalling, activate Nrf2-mediated antioxidant defences, and modulate BDNF (brain-derived neurotrophic factor) expression — a key regulator of neuronal plasticity and cognitive function.
What this means in practical terms: the polyphenols in elderflowers are not passively consumed and excreted. They interact with the cellular machinery of the brain in ways that are measurably relevant to how that brain ages over time.
Anti-inflammatory properties: the evidence
Elderflower extracts have demonstrated significant anti-inflammatory activity in multiple preclinical and clinical studies. The flavonoid rutin — abundant in Sambucus nigra flowers — inhibits the production of pro-inflammatory cytokines including TNF-α and IL-6, both of which are elevated in chronic low-grade inflammation, the kind that drives accelerated biological ageing and is disproportionately prevalent in women during perimenopause and beyond.
This matters because chronic neuroinflammation is increasingly understood to be a central mechanism in the pathology of age-related cognitive decline. It is not a single cause but a sustained background process — and the research is increasingly clear that dietary polyphenols are one of the most accessible and meaningful ways to modulate it. Elderflowers, foraged from a hedgerow and eaten within a few days of picking, provide a concentrated dose of these compounds in their whole-food, bioavailable form.
How to use elderflowers
The florets are delicate and best used fresh, within twenty-four to forty-eight hours of picking. Remove the flowers from the main stem — the green stem itself has a slightly unpleasant flavour and should not be eaten in quantity.
The simplest and most nutritionally intact uses are:
- Elderflower fritters. Dip whole heads in a light batter and fry briefly — the flowers hold together beautifully. Serve with lemon and raw honey.
- Scattered over salads. The individual florets can be stripped and scattered over green salads or grain bowls. Their flavour is subtle and floral — they pair well with cucumber, pea shoots, and a light lemon dressing.
- Elderflower cordial. The classic preparation. Steep the flower heads with lemon zest and citric acid in sugar syrup, strain, and bottle. Admittedly, the processing and sugar content mean this is a more occasional pleasure than a daily health strategy — but small amounts diluted in sparkling water are a genuinely lovely summer drink.
- Elderflower tea. Dried elderflowers steeped in hot water make a light, floral tisane that preserves more of the flavonoid content than cordial preparation. Worth drying a batch if you find an abundance.
- In yoghurt or kefir. A spoonful of fresh florets stirred into full-fat yoghurt or kefir with a little raw honey — a simple, probiotic-rich breakfast that pairs the flowers with a fermented food base for a combined gut and brain benefit.
Wild foods and the methylation diet
There is a principle in nutritional epigenetics that diversity of polyphenol exposure — eating a wide range of plant compounds across the year — is as important as the total quantity of any single compound. Wild foods are uniquely valuable here. Elderflowers contain polyphenol profiles that are distinct from cultivated fruits and vegetables, providing flavonoid combinations that are largely absent from most modern diets.
The methylation diet — the framework at the heart of The Cellular Reset — is built around maximising this kind of dietary diversity. The thirty-plant-a-week target that underpins gut microbiome diversity research applies equally well to polyphenol diversity. Wild foraged foods like elderflowers, nettles, dandelion leaves, and hawthorn berries are not a romantic affectation. They are nutritionally distinct, seasonally concentrated sources of compounds that cultivated food systems simply do not replicate.
Going out to pick elderflowers this morning is not separate from eating well for your cells. It is exactly that.
Free Assessment
What is your biological age?
Most women in perimenopause are ageing faster than their chronological age suggests. The free Bio Age Assessment takes three minutes and gives you a personalised starting point — based on your lifestyle, not a blood test.
