Rosmarinus officinalis
Rosmarinus officinalis
Other names: Rosemary
Needle-like aromatic leaves; hardy in milder regions.
Upright branches, strongly aromatic leaves.
- Family
- Lamiaceae
- Plant type
- Subshrub
- Safety level (indicative)
- Generally recognised as safe
What the safety levels mean (expand legend)
- Generally recognised as safe. Often a common herb with reasonable harvest and use; still read the specific warnings on the card.
- Information. Primarily informational — details in the text and warnings below matter most.
- Caution. Needs extra care (dose, duration, sensitive groups, interactions).
- Risky. Significant risks — verify sources, contraindications and professional guidance.
- Not for home experimentation. Not suitable to experiment with at home without knowledge and certainty.
- High risk for internal use. Particular risk with internal use (e.g. alkaloids); avoid prolonged or irresponsible dosing.
- Not specified. Level not filled in yet — rely on individual warnings and links below.

Fotografie na Wikimedia Commons (GFDL 1.2).
Plant habit
Quick overview
A practical summary; details are in the sections below.
- Safety grade
- Generally recognised as safe·details
- Scientific sources on the card
- Yes — sources are listed with claims·Science section
- When and what to harvest
- Leaf — May–September
- Processing methods
Herbal infusion (tea), Herbal oil, Honey macerate
All methods and recipes on the card- Topics and symptoms
Anxiety & inner restlessness, Circulation comfort (folk), Complexion and local blemishes…
Topics section · Symptoms overview
Identification and mix-ups
Underside of leaves often paler.
Possible mix-ups and risks
Lavender and cultivated sages.
Similar herbs
No related herbs are linked yet.
Topics and symptoms
More topics are in the symptoms and topics overview.
- Anxiety & inner restlessnessTraditional· Traditional / cultural framing
- Circulation comfort (folk)Traditional· Traditional / cultural framing
- Complexion and local blemishesTraditional· Traditional / cultural framing
- Fatigue and low energyTraditional· Traditional / cultural framing
- Focus and attentionTraditional· Traditional / cultural framing
- Liver & bile (folk framing)Traditional· Traditional / cultural framing
- Mood swingsTraditional· Traditional / cultural framing
- Mouth and gumsTraditional· Traditional / cultural framing
- Muscles after exertionTraditional· Traditional / cultural framing
- Sadness and melancholyTraditional· Traditional / cultural framing
- Scalp & hairTraditional· Traditional / cultural framing
- Seasonal allergiesTraditional· Traditional / cultural framing
- Space clearing (ritual)Spiritual· Symbolic / cultural framing
- Stuffy nose & coldsTraditional· Traditional / cultural framing
- TopicTraditional· Traditional / cultural framing
- Trauma - gentle symbolic supportTraditional· Traditional / cultural framing
Geographic occurrence
Czechia
Common (expected wild occurrence in the region)
Austria
Occasional (garden, cultivation, or fringe of the range)
Germany
Occasional (garden, cultivation, or fringe of the range)
Hungary
Occasional (garden, cultivation, or fringe of the range)
Poland
Occasional (garden, cultivation, or fringe of the range)
Slovakia
Occasional (garden, cultivation, or fringe of the range)
France
Occasional (garden, cultivation, or fringe of the range)
Morocco
Occasional (garden, cultivation, or fringe of the range)
South Africa
Occasional (garden, cultivation, or fringe of the range)
Harvest
- LeafMay–September
léto
Region: CzechiaNotes: Harvest note (full translation pending): Nat nebo list v suchu; cista stanoviste.
Storage
- Drying(Leaf)
Sušený rostlinný materiál uchovávej v uzavřené nádobě.
- Light:
- Mimo přímé UV.
- Moisture:
- Nízká relativní vlhkost.
Processing methods on this herb card
Infusion or brief extraction in hot water; usually without long boiling.
Full method description (from the catalogue)
In the narrow sense, “tea” often means an infusion: you pour water just off the boil over the dried plant matter and let it steep for a few minutes. Temperature, steep time, and the herb-to-water ratio change both flavour and what dissolves into the liquid.
Compared with a decoction, heat exposure is shorter and gentler; tender leaves and flowers are often better as an infusion than with prolonged simmering. For each herb, always follow the plant card for suitable plant part, preparation, and safety notes — general rules never replace species-level judgement.
Traditional context for this method: yes·Scientific context for this method: no
Procedure (recipe)
Rosmarinus officinalis — Herbal infusion (tea) (Leaf)
About 8 min · Difficulty: Beginner
Extraction parameters (rough guide): 250 ml water · 90–100 °C · 5–10 min steep
- Use 1 teaspoon dried leaf per cup.
- Pour boiling water, cover, and steep 5–8 minutes.
- Strain — strongly aromatic; gets more bitter with longer steeping.
If you have high blood pressure or take cardiovascular medicines, check reliable references.
Why this way (extraction / behaviour of constituents)
HMPC dokument pro list rozmarýnu zmiňuje tradiční použití při dyspepsii a muskuloskeletální bolesti v přípravcích; silný čaj doma může být dráždivý. Těhotenství, děti a jaterní potíže řeš podle varování v PDF, ne podle blogů.
- What is typically released
- Silice (tymol, karvakrol) a fenolové kyseliny.
- Solvent / water
- Voda.
- After preparation
- Čerstvě.
Extra literature for the recipe
- EMA HMPC — Rosmarinus officinalis, folium (rev. 1)Společný dokument s olejem; čaj je blíže listu.
Macerating herbs in a vegetable oil (cold or with gentle heat).
Full method description (from the catalogue)
Herbal oil is made by steeping dried or fresh material in oil (e.g. olive, sunflower) over time, sometimes with gentle warming. The result is not steam-distilled essential oil — it is a different extract type and usage (often topical or culinary per recipe).
Temperature, light, and material moisture affect shelf life; rancid oil must be discarded.
Traditional context for this method: yes·Scientific context for this method: no
Procedure (recipe)
Rosemary oil
About 35 min · Difficulty: Beginner
- Coarsely chop dried or fresh leaf and fill the jar about halfway.
- Cover with olive or sunflower oil, close, and macerate 3–4 weeks in a warm shady place, shaking occasionally.
- Strain through cloth; use in marinades, roasting, or externally after a patch test on the forearm.
Maceration takes weeks; if you have high blood pressure or take cardiovascular medicines, check suitability.
Why this way (extraction / behaviour of constituents)
Home preparation following this recipe is mainly educational and cultural; it should not be assumed to match the extractive or safety profile of registered medicines or standardized extracts. Check specific effects, drug interactions, and contraindications on the herb card and with your clinician if you use prescription drugs.
- What is typically released
- orientační domácí extrakce — profil závisí na teplotě, času řezu a poměrech
- Solvent / water
- mediální složení (voda, alkohol, olej, med…) viz jednotlivé kroky
- After preparation
- po přípravě uchovávej hygienicky a podle typu výrobku (chlad, světlo, alkohol)
Extra literature for the recipe
- Vyhledávání studií (PubMed apod.)Konkrétní vědecká tvrzení ověř na kartě byliny a v primární literatuře.
Macerating plant material in honey (a honey conserve).
Full method description (from the catalogue)
Honey as a maceration medium creates a viscous mixture with its own biochemistry: water activity, acidity, and enzymes influence shelf life and flavour. Traditionally it is used with delicate flowers or herbs when you want aroma bound into honey.
Infant botulism guidance for honey and honey safety in general sit outside a single herb page; maceration time, ratios, and storage must follow a vetted recipe and source, not this general overview alone.
Traditional context for this method: yes·Scientific context for this method: no
Procedure (recipe)
Rosemary honey
About 30 min · Difficulty: Beginner
- Fill only about one quarter of the jar with dried leaf — rosemary is strong.
- Cover with honey and macerate 2–3 weeks, then strain.
- Use in marinades and roasting; if blood pressure is high, use sparingly.
Maceration takes weeks.
Why this way (extraction / behaviour of constituents)
Phenolic volatile-oil components (e.g. thymol, carvacrol) partially transfer into honey during maceration; concentration depends on leaf cut, temperature, and time. The result is an aromatic concentrate, not a standardized monograph extract.
- What is typically released
- Silice a polární antioxidanty částečně v medu.
- Solvent / water
- Med; macerace 2–3 týdny.
- After preparation
- Po scedění chladně.
Extra literature for the recipe
- Vyhledávání studií (PubMed apod.)Obecný vstup; konkrétní tvrzení ověř na kartě byliny.
Traditional / spiritual use
Kept separate from science — entries are cultural or symbolic, not medical advice.
Related guides in the library
Traditional folk context
General
The herb appears in older folk customs referenced on Czech cards. This note is cultural memory and seasonal storytelling — not a dosing guide, clinical indication, or substitute for the safety section.
- Form:
- různé
- Claim strength:
- Tradition
- Source note:
- Cultural framing only.
Scientific notes
Each claim lists a study type and a source (URL or DOI) where available. Dose notes from the literature are informational only.
How to read evidence strength and study type labels
Labels summarise how the catalogue entry is tagged — they are not a medical verdict on efficacy. For every row, read the summary, limitations and source link.
Evidence strength
- Evidence level not specified
- The author did not grade the record; judge from the summary, limitations and source link.
- Narrative / orientational literature
- Descriptive or expert literature without controlled group comparison — context rather than proof of effect.
- Weak evidence
- Study or conclusion with major methodological limits; treat only as a pointer for further reading.
- Preliminary findings
- First or smaller studies — interesting direction, not the final word on efficacy or safety.
- Moderate strength of evidence
- Moderate strength by study design; sample and context limits still apply.
- Stronger evidence
- Stronger design or consistency of results within the study’s stated limits.
- Review article
- A review summarises multiple sources; quality depends on review method and field.
Study type
- Narrative / expert text
- Expert text or overview without a classical study design.
- In vitro study
- Cell culture or test-tube experiment — does not show an effect in the body.
- Animal study
- Animal model — transfer to humans is not automatic.
- Observational study
- Observing groups without random treatment assignment; confounding is possible.
- Clinical trial
- Human clinical trial; sample size and control group matter.
- Randomised controlled trial
- Randomised controlled trials are among the stronger designs when well conducted.
- Review study
- A review aggregates multiple papers — quality depends on selection rules.
- Systematic review
- Systematic review with explicit search and selection methodology.
- Meta-analysis
- Statistical pooling of studies; outcome depends on input data and heterogeneity.
- Regulatory assessment / monograph (EMA, WHO…)
- Regulatory body summary for a herbal product — different context from a single RCT; often about products, not home tea.
- Expert monograph (herbal preparations)
- Structured literature summary for a plant or drug — quality depends on author and edition year.
Evidence summary (full translation pending): O ucincich a bezpecnosti existuje odborna literatura; zaznam je orientacni a nenahrazuje peci odbornika.
Evidence level not specifiedNarrative / expert textLimitations: Limitations (translation pending): Seed katalogu — dopln konkretni studie podle obsahu.
Evidence summary (full translation pending): EMA HMPC pro list rozmarynu (a olej); caj z listu je blizka tradicni forma, ne vsak identicka s extrakty v dokumentu.
Review articleRegulatory assessment / monograph (EMA, WHO…)Year: 2024Preparation form in the study: infusion
Active compound / focus: kyselina rosmarinová, silice (dle dokumentu)
Limitations: Limitations (translation pending): Opatrnost u tehotenstvi, deti a jaternich potizi dle dokumentu.
Dose note (from literature): Dosage notes (translation pending): Viz PDF k pripravkum.
EMA Committee on Herbal Medicinal Products (HMPC) — European Medicines Agency
EMA: Final assessment report on Rosmarinus officinalis L., folium and aetheroleum (revision 1)
Images
The main photo is in the card header. More images will appear here when available.
Safety
What the warning types mean
The type on each warning helps group themes — it does not replace the separate severity badge.
- Internal use
- Risks from swallowing, extracts, duration of use or concentration for internal use.
- Interactions / medicines
- Possible effect on medicines or concurrent treatment — check sources and a professional.
- Raw plant parts
- Raw, unripe or poorly prepared plant parts can be dangerous.
- Toxins and regulation
- Toxic constituents or regulated compounds (e.g. in distillates).
- Contact with the plant
- Skin or mucosa irritation from contact with fresh plant or sap.
- Allergy
- Allergic reactions, often linked to family sensitisation.
- Harvesting and contamination
- Contamination, species mix-ups or harvesting from unsuitable places.
No structured safety records yet.