English Thyme vs. French Thyme: Leaves, Flavor and Uses

English thyme and French thyme aren’t two species. They’re garden forms, or cultivars, of common thyme, Thymus vulgaris, and you can tell them apart by the leaf: broad on English, fine and gray on French. The flavor difference is a matter of degree. Extension writers call French the lighter or milder of the two and English the more robust,¹² but they don’t agree on which is sweeter, and we didn’t find anyone who’s measured either.

Side by side

	English thyme	French thyme
Species	Thymus vulgaris, cultivar ‘Broadleaf English’	Thymus vulgaris, cultivar ‘Narrow Leaf French’
Family	Lamiaceae (mint family)	Lamiaceae
Native range of the species	Southwestern Europe and southeastern Italy: Spain, France, Italy and the Balearic Islands (Kew)	Same species, same range
Part used	Leaves and flowering tops, fresh or dried	Leaves and flowering tops, fresh or dried
Leaves	Broad and small	Fine and gray
Flowers	White	White
Key compounds	No analysis of this cultivar found. Common thyme oil is usually led by thymol and carvacrol, but the species has several chemotypes (see below).³⁴	No analysis of this cultivar found; same species-level picture³⁴
Flavor, as sources describe it	“The most robust” (Penn State);¹ “sweeter fragrance” (NC State)⁵	A “lighter, sweeter taste” (Penn State);¹ “slightly milder” (UC Master Gardeners)²
Flavor	Fuller and sharper, with more of the resinous, medicinal edge	Gentler, with the same notes turned down
Cost	No dated, sourced comparison found	No dated, sourced comparison found

What the names mean

“English” and “French” are cultivar names, not botanical ones. We couldn’t find a botanical authority that defines them. Kew’s entry covers the species as a whole,⁶ and Britannica just calls T. vulgaris common or garden thyme.⁷ The names on plant tags overlap in confusing ways:

English thyme is the usual kitchen thyme, at least by one extension’s count. UC Master Gardeners in Santa Clara County count more than 300 varieties of thyme and say English thyme is the one most often grown for cooking.²
“Common thyme” isn’t one cultivar. NC State lists common thyme, garden thyme and German thyme as names for the whole species,⁵ and Penn State describes a separate cultivar, ‘German Winter’, as very winter-hardy with good culinary flavor.¹
Not every French-sounding thyme is French thyme. Both extensions describe a cultivar called ‘Provencial’, with tiny, narrow gray-green leaves, white flowers and a strong citrus smell.⁵¹ A tag that says “Provence” or “French” could mean either plant, so check the cultivar name.

You’ll often read that French thyme comes from Provence and is also called summer thyme, and that English thyme spread from England to Jamaica. We found no source for any of it.

How the flavor differs, and where sources disagree

Source	English thyme	French thyme
Penn State Extension (Carol Kagan, 2026)	‘Broadleaf English’ is “the most robust”¹	‘Narrow Leaf French’ has a “lighter, sweeter taste” and is preferred by chefs¹
UC Master Gardeners of Santa Clara County (Pam Roper)	The thyme most commonly grown for cooking²	A similar, slightly milder taste²
NC State Extension Plant Toolbox	‘Broadleaf English’ has a “sweeter fragrance”⁵	‘Narrow Leaf French’: white flowers, fine gray leaves; no flavor note⁵

On strength, all three agree: French is milder. On sweetness, they split. Penn State says French tastes sweeter, while NC State gives the sweeter fragrance to English. One’s talking taste and the other smell, so they may not really conflict, but no test settles it. We’re showing both, not picking one.

Why thyme varies at all. PROSEA reports that Mediterranean T. vulgaris comes in six chemotypes with different main monoterpenes, under genetic control, and in one of them thymol and carvacrol are each below 5% of the oil.³ Thymol leads more often: one T. vulgaris oil in a 2023 study was 42.44% thymol and 2.28% carvacrol.⁴ Growing conditions may matter too. UC Master Gardeners say thyme tastes best grown in poor soil.² Whether ‘Broadleaf English’ and ‘Narrow Leaf French’ differ in chemotype, in oil content or only in leaf size, no source says, because no study we found has analyzed them.

In the kitchen

They cook the same way. America’s Test Kitchen classes thyme as a hearty herb to add early, because the flavor compounds in hearty herbs are somewhat more heat-stable.⁸ The French classics call for thyme without naming a cultivar. The classic bouquet garni is parsley, thyme and a bay leaf, and the Label Rouge specification for herbes de Provence makes thyme 19% of the blend.⁹

Reach for French thyme when thyme is out front in a light dish, like fish, eggs, a quiche or a butter sauce. Use English in roasts, stuffings, stocks and long braises, where its fuller flavor holds up.

Can one stand in for the other?

Yes, almost always. Ratio (Method): both directions below are starting points.

English in place of French. Start with about three quarters of the amount and taste, since English is described as the more robust.¹
French in place of English. Use the same amount, and add a little more at the end if the dish needs it.
Fresh and dried. For converting between fresh sprigs and dried leaves, see fresh thyme vs. dried. For other herbs in place of either, see thyme substitutes.

What isn’t known

We found no published analysis of the oil or flavor compounds of ‘Broadleaf English’ or ‘Narrow Leaf French’.
Sources agree French is milder but disagree on which is sweeter.
No botanical authority defines “English” or “French” thyme; the names come from nursery cultivars.
Jars of dried thyme are sold as just thyme, and we found no labeling source that says which cultivar is inside.
We found no dated, sourced price comparison.

Carol Kagan, “Herb Garden Plants: Thyme”, Penn State Extension, 2026. extension.psu.edu · Reference work ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸
Pam Roper, “English Thyme”, UC Master Gardeners of Santa Clara County. ccfruitandnuts.ucanr.edu · Reference work ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶
S.H. Widodo, Thymus vulgaris, Plant Resources of South-East Asia (PROSEA). uses.plantnet-project.org · Reference work ↩ ↩² ↩³
Dong et al., “Chemical Compositions of Essential Oil Extracted from Eight Thyme Species”, Plants, 2023. mdpi.com · Peer-reviewed ↩ ↩² ↩³
Thymus vulgaris, North Carolina Extension Gardener Plant Toolbox, NC State University. plants.ces.ncsu.edu · Reference work ↩ ↩² ↩³ ↩⁴ ↩⁵
Thymus vulgaris L., Plants of the World Online, Royal Botanic Gardens, Kew. powo.science.kew.org · Reference work ↩
“Thyme”, Encyclopaedia Britannica. britannica.com · Reference work ↩
Liz Bomze, “Our Guide to Fresh Herbs”, America’s Test Kitchen, 2019. americastestkitchen.com · Publication ↩
Label Rouge “Herbes de Provence” (LA 02/03), specification modification request, INAO, 2014. extranet.inao.gouv.fr · Regulator ↩

Also drawn on

Bouquet garni, Encyclopaedia Britannica. britannica.com

English Thyme vs. French Thyme: Two Cultivars of One Herb