Foraging Elderflower in Switzerland: A Local’s Seasonal Guide

Every year in May, I start what I call my “Holunder watch”. I’m scanning the edges of forests on my morning walk, checking the bush near the car park, eyeing the trees along the mountain road on the way to school. The foraging for elderflower season in Switzerland is short — sometimes just two or three weeks — and once those creamy white blossoms appear, you need to move fast.

I’ve been foraging elderflower in Switzerland for several years now. What started as a tentative experiment has become one of my favourite Swiss seasonal rituals. My daughter calls the cordial I make “Mama Syrup” — which tells you everything you need to know about how much of it we get through each summer.

Here’s everything I’ve learned about finding, picking and using elderflower in Switzerland.

When does Elderflower Bloom in Switzerland?

This is the trickiest question to answer, because the season is short, and is weather and location dependent.

As a general guide:

• Lowlands/Midlands (including the Zug/Zürich/Bern regions): late May
• Mid Elevations: (around 600-1100 meters) June
• Higher elevations (high alpine valleys): Late June – Mid July

But elevation isn’t the only variable. A warm spring can push blooms earlier; a cold snap can delay them. The best approach is to start watching your local bushes from early May. Once you know where they grow, if you are like me, you’ll check them almost daily as the season approaches.

This is what I mean by a “Holunder watch“. 

How to Identify Elderflower

You’re looking for a large, sometimes tree-like bush with flat-topped clusters of tiny creamy white blooms. The fragrance is distinctive — sweet and floral, with a slight mustiness when you get close.

If you’re not 100% confident in your identification, use a plant identification app. I use PlanetNet, which has never let me down.

One important note: Elderflower can be confused with other white-flowering plants. If in doubt, don’t pick.

Where to find Elderflower in Switzerland

Here’s the thing nobody tells you: once you know what you’re looking for, you’ll see elderflower everywhere.

I’ve found it growing along the edge of a car park. Along a mountain road. In the forest. Along riverbanks. I know people forage along the Sihl river near Zürich each year.

Elderflower tends to grow at the edges, where forest meets meadow. It likes light and doesn’t grow deep in dense forest.

A few practical tips on location:

• If the bush is on private land, ask permission before picking
• Choose bushes away from busy roads — you don’t want car emissions on your blooms
• Avoid low-lying flowers where foxes and dogs tend to pass

How to Harvest Elderflower

As the German saying goes “Morgen Stund hat Gold im Mund” or translated “The early bird catches the worm”, so foraging for Elderflower in Switzerland starts early, after allowing the morning due evaporate, but before the heat of the day sets in. Avoid picking after rain — you want dry flowers at peak fragrance.

What to Bring

• A basket, colander or open bowl — never a plastic bag, which will crush the delicate blooms
• Scissors or secateurs to cut at the stem

Cut the whole flower head at the stem. You’ll need at least 12 good-sized heads for one batch of cordial. When you get home, you’ll use only the blooms — not the stems or leaves.

Move quickly once you’re home. I learned this the hard way — the first time I foraged, I went to the pharmacy for citric acid and came back to flowers that had already turned. Have your ingredients ready before you go out.

What to Make After Foraging Elderflower in Switzerland

Holunderblütensirup (cordial) is the classic. Mix it with sparkling water for a refreshing summer drink, use it in cocktails — the Hugo is the Swiss favourite — or add it to desserts.

One more use I’d never want to forget: during our winter holiday in Scuol, I discovered Motta Tee — a local hot drink made with elderflower cordial, a green tea bag, fresh ginger and citrus, topped with hot water. It completely changed how I think about Holunderblütensirup. I’d always thought of it as a summer ingredient, but a jar in the pantry will see you through to ski season.

My go-to recipe is from Helvetic Kitchen. Andie has a small batch version using lemons that keeps in the fridge — perfect if it’s your first time and you don’t want to commit to a large batch. For bigger quantities you’ll need citric acid, available at the pharmacy, which gives the cordial a longer shelf life.

Deep-fried elderflower is worth trying at least once. Dip the whole flower head in a light batter and fry briefly — the result is something between a fritter and a floral tempura. I’ve served them on top of panna cotta and it tastes exactly of late spring.

Elderflower tea: dry the flowers and steep them — simple, fragrant, and a good use of any surplus.

Jam: if you have patience and enough blooms, elderflower jam is delicate and unusual. Elderflower jam is delicate and unusual — lovely on bread for a Swiss breakfast. If you want to explore what else ends up on a Swiss breakfast table, Breakfast in Switzerland is worth a read.

Don’t want to forage your own? You’ll find Holunderblütensirup at most farmers markets and in larger supermarkets from late May.

If you catch the elderflower season, you’re perfectly placed for what comes next — cherry season follows just a few weeks later in June.

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