Spice Comparisons · Comparison
Rosemary vs. Sage: Two Salvias, Two Different Oils
Rosemary and sage now share a genus: botanists moved rosemary into Salvia, so garden sage is Salvia officinalis and rosemary is Salvia rosmarinus.12 In the pan they still behave like different herbs. Sage’s smell comes mainly from thujones, while rosemary’s oil is led by α-pinene and 1,8-cineole, which is why sage reads as musky and bitter and rosemary as piney.34 Both are strong, both go in early, and each can cover for the other in a roast, with different amounts depending on the direction of the swap.
Side by side
| Rosemary | Sage | |
|---|---|---|
| Species | Salvia rosmarinus, formerly Rosmarinus officinalis1 | Salvia officinalis, common or garden sage25 |
| Family | Lamiaceae (mint family)1 | Lamiaceae (mint family)2 |
| Native range | The Mediterranean1 | Southwestern Germany to southern Europe2 |
| Part used | Leaves, fresh or dried6 | Leaves, fresh or dried3 |
| The leaf | Dark green, glossy, linear and leathery, with curled margins;6 1 to 5 cm long and only 1 to 2 mm wide7 | Oblong-lanceolate to elliptical, up to 10 cm long, wrinkled, white-hairy beneath3 |
| Oil in dried leaf | 1 to 2%7 | Up to 2.5%, depending on origin and harvest3 |
| Leading oil compounds | α-pinene and 1,8-cineole4 | α- and β-thujone, 1,8-cineole, camphor3 |
| Flavor | Pungent and slightly bitter (Britannica);6 piney and resinous (editorial) | Bitter and pungent with a pleasant aroma (PROSEA);3 musky and camphor-scented (editorial) |
| Dried forms | Whole dried leaves; ground is also sold | Whole, rubbed or ground3 |
| Typical uses | Meats, vegetables, soups and beverages; baking and infused oils6 | Sausages, stuffings, soups and canned vegetables; fresh in herb butters, cheeses and salads3 |
| US food status | GRAS spice (as Rosmarinus officinalis)8 | GRAS spice8 |
How the oils compare
The clearest like-for-like comparison we found is in the same reference work. PROSEA’s handbook reports one Spanish oil of each herb. They come from different studies, so this is not a single-lab measurement, but the scope matches: a Spanish essential oil, by percentage.
| Compound | Spanish rosemary oil (camphor type) | Spanish sage oil |
|---|---|---|
| Camphor | 35.3% | 5.0% |
| 1,8-Cineole | 24.0% | 15.7% |
| α-Pinene | 0.9% | not given |
| α-Thujone | not given | 22.8% |
| β-Thujone | not given | 4.3% |
Sources: PROSEA rosemary entry (Arnold et al., 1997)7 and PROSEA sage entry (Sanchez-Gomez et al., 1995).3
That rosemary oil is a camphor type, and rosemary varies a great deal. A 2017 study of oils from plants collected in six countries found them dominated instead by α-pinene (13.5 to 37.7%) and 1,8-cineole (16.1 to 29.3%), with camphor at only 0.7 to 7.0%, and identified at least five chemotypes.4 Sage varies too: an Italian oil in PROSEA had more β-thujone (26.9%) than α-thujone (23.0%).3 The constant is that thujones lead sage oil, and PROSEA credits them with sage’s strong characteristic smell,3 while rosemary’s warm, piny note is credited to α-pinene and its camphor-like bite to borneol.7
The real differences in the kitchen
Strength. The University of Delaware puts both in its strong-herb group and warns that strong herbs can be extremely objectionable if too much is used.9 Which is stronger has no measured answer. Elizabeth Okosun of Tasting Table says sage tastes very similar to rosemary but more intense,10 and A Couple Cooks uses half as much sage when it replaces rosemary.11 A widely repeated claim that rosemary is clearly the stronger of the two has no source behind it that we could find.
Timing. America’s Test Kitchen classes both as hearty herbs that go in early in cooking.12 In ATK’s tests, dried rosemary and dried sage both fared reasonably well in dishes cooked for more than 20 minutes with plenty of liquid.13
Texture. Rosemary’s needles stay tough, so they are chopped fine or used as whole sprigs and removed. Sage leaves are soft and crisp well when fried briefly in butter or oil. Both points are cooking judgment.
Forms. Dried sage is sold whole, rubbed or ground.3 Rubbed sage is made by rubbing the dried leaves together, while ground (powdered) sage is a fine powder.14 See fresh sage vs. dried sage and dried rosemary vs. fresh for conversions within each herb.
Where each is used. PROSEA lists sausages, stuffings, soups and canned vegetables as sage’s spice uses, and fresh leaves in herb butters, cheeses and salads.3 Britannica lists meats, vegetables, soups and beverages for rosemary.6 The two often appear together: McCormick’s culinary poultry seasoning lists thyme, sage, marjoram, rosemary, black pepper and nutmeg, in that order.15 Beyond those sources, it is common practice to pair rosemary with lamb, potatoes and focaccia, and sage with pork, poultry stuffing, winter squash and brown butter.
Can one stand in for the other?
Yes, in cooked savory dishes, and the published ratios are not symmetrical.
| Swap | Starting amount | Treatment |
|---|---|---|
| Sage in place of rosemary | Half as much sage, fresh or dried, then adjust | Attributed: A Couple Cooks11 |
| Rosemary in place of sage | Equal parts, fresh for fresh or dried for dried | Attributed: A Couple Cooks14 |
Both figures come from the same publisher but from two separate articles, and taken together they imply different views of which herb is stronger. Neither says how it was reached. Our rosemary substitutes and sage substitutes pages use these figures and suggest tasting as you go. A Couple Cooks adds that rosemary works especially well as a sage substitute when fresh.14
Two cautions:
- A rule of one third as much dried rosemary for rubbed sage circulates widely. We found no source for it.
- Neither herb belongs raw in large amounts. Chop rosemary very fine if it goes into a finished dish.
Safety
Both are listed by the FDA as spices generally recognized as safe.8 The European Medicines Agency names sage and rosemary among plants that contain thujone in highly variable amounts.16 NCCIH says sage is likely safe in the amounts found in foods but may be unsafe during pregnancy because of its thujone.5 The EMA concluded that the benefits of sage essential oil do not outweigh its risks;16 that concerns the concentrated oil, not the dried leaf. See the sage profile for details.
What isn’t known
- No study we found analyzes rosemary and sage oils in the same lab. The table above pairs two Spanish oils from different studies.
- No source measures the flavor strength of rosemary against sage. The ratios above are cooks’ rules of thumb.
- No measurement of thujone in a teaspoon of either culinary herb was found.
Related
- Profiles: rosemary and sage
- Substitutes: rosemary substitutes and sage substitutes
- Comparisons: rosemary vs. lavender, sage vs. lavender, rosemary vs. thyme and tarragon vs. rosemary
- Cooking: cooking with rosemary, cooking with sage, how to dry sage and poultry seasoning
Footnotes
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Salvia rosmarinus Spenn., Plants of the World Online, Royal Botanic Gardens, Kew. powo.science.kew.org · Reference work ↩ ↩2 ↩3 ↩4
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Salvia officinalis L., Plants of the World Online, Royal Botanic Gardens, Kew. powo.science.kew.org · Reference work ↩ ↩2 ↩3 ↩4
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U.A. Dasuki, Salvia officinalis, Plant Resources of South-East Asia (PROSEA). uses.plantnet-project.org · Reference work ↩ ↩2 ↩3 ↩4 ↩5 ↩6 ↩7 ↩8 ↩9 ↩10 ↩11 ↩12 ↩13
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Satyal et al., “Chemotypic Characterization and Biological Activity of Rosmarinus officinalis”, Foods, 2017. mdpi.com · Peer-reviewed ↩ ↩2 ↩3
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“Sage”, National Center for Complementary and Integrative Health, 2025. nccih.nih.gov · Regulator ↩ ↩2
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“Rosemary”, Encyclopaedia Britannica. britannica.com · Reference work ↩ ↩2 ↩3 ↩4 ↩5
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C.C. de Guzman, Rosmarinus officinalis, Plant Resources of South-East Asia (PROSEA). uses.plantnet-project.org · Reference work ↩ ↩2 ↩3 ↩4
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21 CFR 182.10, US Food and Drug Administration. ecfr.gov · Regulator ↩ ↩2 ↩3
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“Using Herbs and Spices”, University of Delaware Cooperative Extension, 2025. udel.edu · Reference work ↩
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Elizabeth Okosun, “The Absolute Best Substitutes For Rosemary”, Tasting Table, 2023. tastingtable.com · Publication ↩
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Sonja Overhiser, “Best Substitute for Rosemary”, A Couple Cooks. acouplecooks.com · Publication ↩ ↩2
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Liz Bomze, “Our Guide to Fresh Herbs”, America’s Test Kitchen, 2019. americastestkitchen.com · Publication ↩
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“Science: Substituting Dried Herbs for Fresh”, America’s Test Kitchen. americastestkitchen.com · Publication ↩
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Sonja Overhiser, “Best Sage Substitute”, A Couple Cooks. acouplecooks.com · Publication ↩ ↩2 ↩3
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McCormick Culinary Poultry Seasoning, product page, McCormick & Company. mccormick.com · Merchant ↩
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Public statement on herbal medicinal products containing thujone, European Medicines Agency, 2012. ema.europa.eu · Regulator ↩ ↩2