Here is how to make cornflower tea in one line: steep about 1 to 2 teaspoons of dried cornflower petals in just-off-boil water (around 90 to 95C) for 4 to 6 minutes, then strain. Cornflower tea is a mild, gently sweet, faintly grassy-floral, caffeine-free infusion made from the vivid blue blossoms of the cornflower (Centaurea cyanus), the wildflower of European fields also known as bachelor's button.
The petals give a pretty pale blue-to-lilac cup, and they are the very same edible flowers you spot scattered through many loose-leaf blends. Below you will find a simple blue cornflower tea recipe, ideas for turning up the flavour, a colour trick with lemon, and how to store the dried blooms so they keep their brightness.
What cornflower tea is
Cornflower tea is an infusion of dried cornflower petals in hot water. The taste is famously light: delicate, subtly sweet, with a faint grassy-floral note that sits somewhere near fresh hay and a hint of clove. It is gentle rather than bold, which is a big part of its appeal. Because there is no tea leaf involved, there is no caffeine, so it suits an afternoon or an evening cup.
The flower itself has a long history as a European edible bloom. Those brilliant blue petals have been scattered through tea blends, dried into potpourri, and used as a natural garnish on cakes and salads for generations. If you have ever seen a scattering of bright blue flecks in an Earl Grey or a fruit blend, there is a good chance you were looking at cornflower. It is prized as much for the colour it lends as for its quiet flavour. For a fuller primer on what counts as a herbal tea and how these caffeine-free infusions work, see our guide to what herbal tea is.
Why cornflower is usually blended
Here is the key thing to know before you brew: on its own, cornflower is mild. Steep it alone and you get a lovely coloured cup with a soft, understated flavour. That is exactly why so many blenders reach for it as a supporting player rather than a soloist. Its real job in a blend is often visual, adding those unmistakable blue flecks, while a stronger partner carries the taste.
If you want more flavour in the cup, blend it. A few pairings that work well:
- A little green tea for a light, brisk base with some body (and a gentle lift of caffeine).
- Mint for a cool, refreshing finish that plays nicely with the floral note.
- Chamomile for a mellow, honeyed, flower-on-flower cup. If you like that idea, our chamomile tea recipe makes an easy partner.
- A curl of lemon peel or a squeeze of juice for brightness (and, as you will see below, a fun colour change).
Cornflower also sits happily alongside other edible-flower teas. If you enjoy this kind of soft, aromatic infusion, you might also try our lavender tea recipe, another delicate floral cup that rewards a light hand. Treat the colour of your cornflower cup as part of the charm rather than a sign of strength: a pale blue brew is doing exactly what it should.
Choosing and sourcing dried cornflowers
Quality and safety both come down to sourcing. Use blooms that are meant to be eaten. The simplest route is shop-bought dried culinary cornflowers, sold loose as edible flowers or as part of a tea blend. These are grown and dried for consumption, which is what you want.
If you are picking your own, correct identification and clean growing conditions matter. Cornflower is the vivid blue, ragged-edged wildflower of open fields and roadsides; use only flowers you can positively identify as Centaurea cyanus, harvested well away from roadsides, sprayed lawns, or any spot that may have been treated with weedkiller or pesticide. When in doubt, leave it and buy dried blooms instead. Look for petals that are still a strong, saturated blue: bright colour is a good sign the flowers were dried gently and stored away from light.
What you need
This blue cornflower tea recipe needs almost nothing beyond the flowers and hot water. Per cup (about 200 to 250 ml):
- 1 to 2 teaspoons dried cornflower petals (start with 1.5 tsp for an everyday cup).
- Water at about 90 to 95C (194 to 203F), which is just off the boil.
- Optional: a little honey or your preferred sweetener, a squeeze or curl of lemon, and a few mint leaves or a pinch of chamomile to blend.
A glass cup or a clear glass pot is worth using here so you can actually watch the colour bloom, which is half the fun of a bachelor's button tea.
How to make cornflower tea, step by step
- Measure the petals. Add 1 to 2 teaspoons of dried cornflower petals to a cup, an infuser, or a small glass pot.
- Heat the water. Bring water to a boil, then let it settle for 30 to 60 seconds so it drops to around 90 to 95C. Delicate flowers hold their colour and flavour better below a full rolling boil.
- Pour and cover. Pour the hot water over the petals and cover the cup or pot. Covering keeps the heat in and the aromatics from drifting off.
- Steep 4 to 6 minutes. Let it infuse. Shorter for a paler, more delicate cup; longer for the deepest blue and fullest flavour.
- Strain. Strain out the petals or lift out the infuser. Cornflower does not turn bitter the way some leaves do, but straining gives a cleaner cup.
- Finish to taste. Sweeten lightly with a touch of honey if you like, and add a partner such as mint or lemon. Sip it warm, or pour it over ice for a pretty cold drink.
Use the quick reference below to dial the cup in. For more on getting steep times right across different flowers and leaves, our guide on how to brew herbal tea covers the general technique in more depth.
| Dried petals (per cup) | Steep time | Note |
|---|---|---|
| 1 tsp | 4 min | Lightest colour and flavour; ideal inside a blend |
| 1.5 tsp | 5 min | Balanced everyday cup, soft blue tone |
| 2 tsp | 6 min | Deepest blue and fullest flavour; lovely over ice |
The lemon colour trick
Here is the party piece. Cornflower petals contain natural blue pigments that respond to acidity, so a squeeze of lemon (or any acidic juice) will nudge the cup from blue toward a soft pink or lilac right in front of you. Brew the tea blue, then add lemon at the table and watch it shift. It is the same kind of colour change you may know from butterfly pea flower, and it makes a cornflower cup a small bit of theatre for guests. The flavour barely changes; this is all about the colour.
Storing dried cornflower petals
Dried cornflowers keep well if you protect them from the three things that fade flowers: light, heat, and moisture. Store the petals in an airtight jar or tin, somewhere cool, dry, and dark, such as a cupboard away from the stove. Kept this way they will hold their blue and their gentle aroma for many months. If the petals turn dull, brownish, or lose their scent, they are past their best and worth replacing. Because colour is the whole point of cornflower, a dark cupboard is your friend.
Is cornflower tea safe to drink?
Cornflower petals are a common edible flower and are widely enjoyed in tea. A couple of light, practical points are worth keeping in mind, and none of this is medical advice: responses vary from person to person.
Cornflower belongs to the daisy family (Asteraceae), the same broad group as ragweed, marigold, and chamomile. If you have a known allergy to ragweed or other daisy-family plants, you may want to be cautious and start with a small amount, or skip it. As with any botanical infusion, if you are pregnant or breastfeeding, or you take regular medication, it is best to ask your own healthcare provider before making it a habit. Treat cornflower tea as the gentle, pretty, occasional cup it is meant to be, rather than a remedy, and enjoy it for its colour and its quiet, sweet-grassy charm.