When to pick chamomile for optimal aroma

When to pick chamomile : the ideal period is from June to August, as soon as the flower heads are fully open and the white petals are just beginning to fold back towards the stem.

According to an analysis published in the Journal of Agricultural and Food Chemistry (2021) [1], the concentration of α-bisabolol and apigenin reaches its peak precisely at the full flowering stage, before the petals fall.

• The optimal harvest window lasts 3 to 5 days per flower.
• The best time: between 9am and 11am, after the dew has evaporated.
• German chamomile flowers from June to August ; Roman chamomile, from July to September.
• A fully ripe flower head detaches easily with a slight twist of the wrist.
• Harvesting too late reduces the essential oil content by 30 to 40%.

Why the right time to pick makes all the difference

Knowing when to pick chamomile isn't simply a matter of timing. It's a chemical decision. The essential oils, flavonoids, and terpenes concentrate in the flower heads during a very short window.

A study published in Industrial Crops and Products (2020) [2] showed that flowers harvested at their optimal stage contained 0.82% essential oil, compared to only 0.49% for flowers harvested two weeks later. The difference is significant for any therapeutic or culinary use.

Many readers have told us that they were harvesting their chamomile too late, after the heart had completely yellowed, resulting in a bland and ineffective tea. Simply correcting the harvest date transformed their experience.

Calendar: When to pick chamomile according to the variety

Not all chamomile varieties bloom at the same time. Identifying your variety is the first step in accurately planning when to harvest chamomile.

German chamomile (Matricaria chamomilla) is the most widely used in herbal medicine. It also has the shortest and most demanding harvesting window.

The 5 visual signs that indicate when to pick chamomile

Observing the flower remains the best indicator. Here are five visual criteria to check before harvesting any chamomile.

1. White petals slightly inclined downwards : the most reliable sign. The petals form an angle of approximately 45° with the yellow center.
2. Dense, bulging yellow heart : the central receptacle is well swollen, without brown or dark spots.
3. Pronounced aroma : lightly crush a petal between your fingers. An intense apple-honey scent confirms its ripeness.
4. Flexible but firm stem : the flower detaches with a slight twist, without forcing.
5. Absence of dew : the surface of the capitulum is dry to the touch, a sign that harvesting can begin.

If the petals are still horizontal and the center flat, wait another 24 to 48 hours. If the center turns brown and the petals fall off, the harvest is too late for optimal medicinal use.

What time of day is best for picking chamomile?

The question of when to pick chamomile also includes the time of day. Traditional herbalists and modern research agree on this point.

• Between 9 a.m. and 11 a.m .: ideal window. The dew has evaporated, the heat has not yet degraded the volatile oils.
• After 2 p.m .: not recommended. The heat accelerates the evaporation of aromatic compounds.
• After rain : wait at least 24 hours. Humidity promotes mold growth as it dries.
• In overcast and cool weather : acceptable if there is no dew and the flowers are dry.

Popular tradition, cited in historical French herbalist sources, recommends harvesting "after the morning dew but before the sun is at its zenith." Science confirms this empirical practice.

Harvesting technique: how to harvest without damaging the plant

Knowing when to pick chamomile is essential, but the technique determines the quality of the harvest and the health of the plant for subsequent cycles.

• Use your fingers or a chamomile comb (traditional tool with spaced teeth).
• Harvest only the flower heads, not the leafy stems.
• Leave 30 to 40% of the flowers on the plant to ensure pollination and natural reseeding.
• Place the flowers in a wicker basket or a cloth bag, never in a sealed plastic bag.
• Do not pack the flowers: internal heat accelerates fermentation and degrades the active ingredients.
• Rinse your hands before harvesting if you have applied a cream or repellent.

Harvesting regularly every 3 to 5 days stimulates the production of new flowers. A properly harvested plant can produce up to three flowering cycles in a single season.

If you're wondering when to sow for a good harvest, check out our guide on when to plant chamomile for a successful harvest.

Drying and preservation after harvest

The chamomile harvest is only successful if the drying process is controlled. Improper storage negates all the benefits of harvesting at the right time.

1. Spread the flowers in a single layer on a sieve or wire frame.
2. Dry in a dry, well-ventilated place away from direct sunlight, between 25°C and 35°C maximum.
3. Turn the flowers over once a day for the first 5 to 7 days.
4. The drying process is complete when the flower heads are crisp and break between the fingers.
5. Store in an opaque glass jar, tightly closed, away from heat.
6. Optimal shelf life: 12 to 18 months for preserved aroma and effectiveness.

Oven or dehydrator drying is possible at low temperatures (35-40°C maximum). Above this temperature, the essential oils evaporate and the flavonoids partially degrade.

German or Roman chamomile: harvesting differences

These two species are often confused, but their harvesting has important differences. If you are unsure of your identification, consult our chamomile vs. daisy to avoid any confusion.

• Chamomile : hollow receptacle when cut, thinner petals, more intense aroma. Harvest as soon as the petals bend at a 45° angle.
• Romaine : full receptacle when cut, wider petals, sweeter and fruitier aroma. Harvest slightly earlier, when petals are still almost horizontal.
• Chamomile self-seeds; romaine lettuce is often perennial and requires pruning after harvest.
• For herbal medicine, chamomile is the reference in European and French pharmacopoeias.

ANSESofficially recognizes Matricaria chamomilla in its list of medicinal plants for its spasmolytic and anti-inflammatory [3].

Harvesting in urban areas and in pots: adapt the calendar

Growing plants in pots slightly alters the harvest schedule. The containers heat up faster, and flowering can be brought forward by two to three weeks compared to growing them in the ground.

• In a pot on a south-facing balcony: flowering possible from the end of May.
• Monitor the substrate moisture: soil that is too dry accelerates bolting and reduces the harvest window.
• In polluted urban areas, gently rinse the flowers in cold water and dry them immediately before storing.
• Avoid harvesting along busy roadsides: the flower heads accumulate PAHs and heavy metals.

Post-harvest uses: herbal tea, oil, and cosmetics

Once you know when to pick chamomile and your harvest is dried, the applications are numerous. Each use has its own quality requirements.

• Herbal tea : 1 to 2 tablespoons of dried flowers per 250 ml of water at 90°C, steep for 5 to 10 minutes. For precise dosage, read our article " Chamomile tea: how much per day - dosage and tips".
• Maceration oil : dried flowers in olive or sunflower oil, 4 to 6 weeks away from light.
• Eye compress : a cooled infusion applied to the eyelids. Discover our complete guide on how to use chamomile for your eyes.
• Fresh leaves : usable in cooking. See our article "What to do with chamomile leaves" for original ideas.
• Evening herbal tea : Chamomile is known for its effects on sleep. Read "Does chamomile help you sleep? What science says" to find out more.

The NCCIH (National Institutes of Health, USA) recognizes chamomile as one of the best-documented medicinal plants for the management of mild stress and sleep disorders [4].

Harvest and healthy weight: an unexpected benefit

Harvesting your own chamomile encourages regular consumption of the herbal tea, which can be part of a holistic wellness approach. If you're wondering about the effects of this plant on your figure, our article " Does Chamomile Help You Lose Weight?" analyzes the available data.

For difficult evenings, comparing verbena or chamomile for sleep will help you choose the plant best suited to your needs.

Common mistakes to avoid when picking fruit

Even when knowing the ideal time, certain mistakes can compromise the quality of the chamomile harvest.

1. Harvesting too early : buds still closed, insufficient content of active ingredients.
2. Harvesting too late : fallen petals, brown center, essential oils evaporated.
3. Harvesting in humid weather : high risk of mold during drying.
4. Packing the flowers tightly in a bag : rapid fermentation and loss of aroma.
5. Drying in direct sunlight : degradation of flavonoids by UV rays.
6. Neglecting crop rotation : plant exhaustion and lack of reseeding.
7. Do not confuse with the daisy (Leucanthemum vulgare): no comparable medicinal properties.

Scientific data on composition according to harvest stage

Research confirms that the harvest stage is the most determining variable for phytochemical quality. A study published in Phytochemistry (2019) [5] compared batches of Matricaria chamomilla harvested at three different stages.

• Button stage : 0.31% essential oil, weak apigenin.
• Full bloom stage (petals at 45°) : 0.82% essential oil, maximum apigenin.
• Post-flowering stage : 0.49% essential oil, flavonoid degradation initiated.

This data confirms that knowing precisely when to pick chamomile is not a matter of tradition but of documented plant biochemistry.

Sustainable harvesting: preserving the plant and the ecosystem

Wild chamomile is found in meadows, roadsides and wastelands. Its harvesting must respect certain principles of sustainability.

• Never harvest more than one third of the flowers from any one wild site.
• Leave flowers for pollinators : bees and hoverflies depend on chamomile in summer.
• Avoid areas treated with pesticides or close to conventional crops.
• Prefer your own cultivation in a garden or pot for a harvest without impacting wild populations.
• If you are unsure about the botanical identification, consult a certified herbalist or a pharmacist specializing in botany.

Frequently asked questions about when to pick chamomile

When is the best time to pick chamomile to make an effective herbal tea?

Harvest chamomile as soon as the white petals begin to droop slightly towards the stem, between June and July for German chamomile. This is when the concentration of apigenin is at its highest, ensuring an herbal tea with optimal calming properties.

How can you tell if chamomile is ready to be picked?

Observe the angle of the petals: at 45° downwards, the flower is ready. Crush a petal: an intense apple-honey aroma confirms its ripeness. The flower head detaches easily with a slight twist.

Can chamomile be picked in September?

Yes, Roman chamomile (Chamaemelum nobile) blooms until September. As for German chamomile, the last flowers at the end of August can still be harvested if they are at their peak. Avoid flowers with brown centers.

When is the best time to pick wild chamomile in the fields?

Wild chamomile typically blooms from May to August, depending on altitude and climate. Observe the same visual criteria as in a garden. Avoid roadsides and agricultural areas treated with herbicides.

How many times can chamomile be harvested in a season?

A well-maintained plant will produce two to three flushes of blooms per season. Harvest every 3 to 5 days during the flowering period to encourage the production of new flowers.

Should the stem be cut when picking chamomile?

No. Harvest only the flower head. Leave the stem and leaves intact to allow the plant to continue growing and producing new flowers.

When to pick Roman chamomile compared to German chamomile?

Roman chamomile flowers 3 to 4 weeks after German chamomile. Harvest German chamomile from June to July, and Roman chamomile from July to August. The visual criteria for maturity are the same for both species.

Is chamomile that is picked too early unusable?

It remains usable but less effective. Unopened buds contain fewer essential oils and flavonoids. For medicinal use or a high-quality herbal tea, wait until it is in full bloom.

Is it safe to pick chamomile in the rain?

No. The moisture in the flowers encourages mold growth during drying. Wait at least 24 hours after rain and check that the flower heads are completely dry before harvesting.

When is the best time to pick chamomile in the mountains or at high altitudes?

At higher altitudes, flowering is delayed by 2 to 4 weeks compared to the plains. In the Alps or the Pyrenees, the harvest period can extend from July to September. Rely on visual criteria rather than the calendar.

How to preserve freshly picked chamomile before drying?

Spread the flowers immediately in a single layer on a sieve. Never leave them in a pile for more than two hours: the internal heat quickly degrades the active ingredients. Begin drying on the same day as harvesting.

When to pick chamomile for cosmetic use?

For skin and hair care, the same criteria apply: full bloom, drooping petals, intense aroma. Flowers harvested at this stage contain the mostα-bisabolol, which is particularly beneficial for sensitive skin.

Key takeaways

Knowing when to pick chamomile is key to a harvest rich in active ingredients. The ideal window is between June and August, in the morning between 9 and 11 a.m., when the white petals are at a 45° angle and the aroma is at its peak. Picking chamomile at the right time guarantees an herbal tea, oil, or cosmetic product with up to 40% more concentration of beneficial flavonoids.

Practical action: Starting tomorrow morning, inspect your chamomile plants between 9 and 11 a.m. If the petals are drooping downwards and the aroma is intense, begin harvesting. Immediately spread the flowers on a sieve and dry them in the dark for 5 to 7 days.

Sources and studies

1. Chemical composition and biological activity of Matricaria chamomilla essential oils at different harvest stages — Journal of Agricultural and Food Chemistry, 2021
2. Effect of harvest time on essential oil yield and composition of chamomile — Industrial Crops and Products, 2020
3. List of recognized medicinal plants — Matricaria chamomilla — ANSES, 2023
4. Chamomile — Health Information — NCCIH, 2023
5. Apigenin and flavonoid content variation in Matricaria chamomilla at different developmental stages — Phytochemistry, 2019