Chamaenerion angustifolium

Known as fireweed, great willowherb or rosebay willowherb.
Family: Onagraceae.
Genus: Chamaenerion.
Species: C. angustifolium.

Fireweed is one of my favorite wild plants. It’s one of the first plants to shoot after the long and harsh Nordic winter and it sticks around all the way to autumn.

When it’s small and tender, fireweed shoots can be used just like asparagus, fried in a pan or grilled or, why not, as a filling to a delicious focaccia. What about when the plant grows, though? Fireweed keeps on being edible! The leaves can be dried and used as herbal tea or apparently they can even be fermented to become a proper tea, minus the caffeine. This is an ancient Russian tradition and one of my next projects by the way, it sounds too interesting not to investigate!

What about fireweed flowers? They too are edible! You could use them to decorate cakes and summer salads, freeze them in ice cubes for your summer drinks or, my favorite way, you can make a wonderfully floral syrup out of it!

Fireweed Syrup - Nordic Foraging on The Adagio Blog by Thais FK
Fireweed Syrup - Nordic Foraging on The Adagio Blog by Thais FK

If you’ve ever made lilac syrup, it tastes slightly the same, but with an advantage in my opinion: you don’t have to cheat by adding some coloring or blueberries to get that beautiful purple color! All you need to do is add a little lemon juice to make the syrup slightly acidic, and that will bring back the beautiful, vibrant color of these wild flowers.

Fireweed can be found in many parts of the earth, so it should be accessible to many of you. If you want to store the fireweed syrup for longer than a few weeks, you could freeze it up in ice cubes molds for example and thaw it when you need it.

For an easy and perfect summer mocktail, fill a tumbler with ice (preferably floral ice cubes), add 1 tbsp of fireweed syrup, 1 tbsp of lime or grapefruit juice and top with sparkling water.

Fireweed Syrup

A delicate floral syrup of a beautiful purple color to give a summery twist to your cocktails, iced teas and coffee drinks or simply to use on top of your morning pancake or waffles.
Course: Drinks
Cuisine: Nordic
Keyword: fireweed, syrup
Author: Thais FK


  • 250 ml water
  • 250 g granulated sugar
  • 1 handful fireweed flowers
  • 1 tbsp lemon juice


  • Make sure that the fireweed flowers are clean and don’t have any bugs in them.
  • Place the water, the sugar and the flowers in a saucepan and bring to mix, stirring occasionally.
  • Let the syrup boil for a few minutes, turn the heat off, add the lemon juice and cover the saucepan with a lid.
  • Let the fireweed syrup steep for at least 12 hours, after which you can filter it and bottle it up.
  • Store in the refrigerator for up to a month.
Did you enjoy this recipe? Pin it for later! Tried this recipe? Mention @adagioblog or tag #adagiorecipes!
Fireweed Syrup - Nordic Foraging on The Adagio Blog by Thais FK
Fireweed Syrup - Nordic Foraging on The Adagio Blog by Thais FK
Nordic Foraging project by Thais FK supported by Taike

Nordic Foraging project by Thais FK supported by Taike

Thais FK

Italian photographer, recipe developer and content creator, Thais came to Finland by chance, but stayed for love. Through photography she tells stories about traveling, eating, cooking and living sustainably, in order to discover new cultures and not to forget her origins. Thais FK's portfolio:

August 19, 2021



  1. Reply


    April 11, 2022

    Hello! I’d really like to make this recipe for wedding favors this June. I want to make ahead of time and store it. Is it possible to freeze it once made or would you only recommend the 1 month refrigerated storage timeline?

    • Reply

      Thais FK

      April 12, 2022

      Hello there! What a wonderful idea to make fireweed syrup wedding favors! It’s definitely possible to freeze the syrup, but that’s going to shorten its life span, so I am not sure for how long will the syrup stay good once thawed. I recommend to try the procedure with another edible flower available in this season where you live and see how it goes. Remember to leave plenty of headspace to allow for expansion if you’re planning to freeze in glass.


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