12 Types of Thyme Compared (Out of 220+ Species): Culinary vs. Creeping and Which to Plant Where

Walk into any garden center’s herb section and “thyme” sits under one label, but what’s actually on the shelf are plants that don’t behave the same way, don’t taste the same, and in some cases aren’t meant for the kitchen at all. Plant woolly thyme where you wanted a pot of cooking thyme and you’ll grow a beautiful, low-flavor silver mat instead — Thymus pseudolanuginosus just doesn’t carry the aromatic oils that make other thymes worth harvesting. Plant common thyme where you wanted a lawn alternative and you’ll get a stiff, 10-inch woody mound that never fills the gaps between pavers.

Botanists count anywhere from 220 to 350-plus species in the genus Thymus, depending on how liberally they split regional variants, according to North Carolina State University’s Extension Gardener Plant Toolbox and its documented species list. Only a fraction of those are sold in US nurseries, and only about a dozen show up often enough to matter for home gardeners. Below are the 12 worth knowing — six built for the kitchen, six built to spread — with the RHS hardiness rating, USDA zone range, and specific growing niche for each, plus the actual chemistry that separates a “lemon” thyme from a “common” one.

Culinary vs. Creeping Comes Down to Chemistry, Not Just Species

The culinary-versus-creeping split on nursery tags isn’t a formal botanical category. It’s shorthand for two separate traits: how much of the plant’s essential oil is thymol or carvacrol (the sharp, medicinal phenols that make a thyme worth cooking with), and how low and fast the plant spreads (the trait that makes a groundcover useful).

Both traits vary within a species, not just between species. A peer-reviewed analysis of wild Thymus pulegioides populations found two distinct chemical types growing side by side: a carvacrol chemotype, where carvacrol and its precursors p-cymene and gamma-terpinene made up roughly half the essential oil and produced the familiar spicy, phenolic thyme smell — and a geraniol chemotype, where geraniol and related citral compounds made up nearly 80% of the oil and produced a floral, lemon-like scent instead. That’s the mechanism behind “lemon” thyme: it isn’t a lemon-flavored version of regular thyme, it’s a plant whose terpene synthesis pathway favors geraniol over carvacrol. Rub the leaves and you’re smelling a genuinely different chemical profile, not a marketing name.

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Growth habit is the second axis. Culinary types (T. vulgaris, T. citriodorus, T. pulegioides) evolved upright, woody-based habits in rocky Mediterranean scrub — good for repeated cutting, bad for filling bare ground. Creeping types (T. serpyllum, T. praecox, T. pseudolanuginosus) root along the stem as they spread, which is what lets them knit into a mat instead of staying put as a clump.

12 Types of Thyme at a Glance

Every species below is rated H5 by the RHS unless noted — meaning cold tolerance mostly isn’t what separates one thyme from another. What actually varies is growth habit, flavor chemistry, and how well each handles heat, humidity, or foot traffic. The table below covers all 12; the sections that follow explain the reasoning behind each pick.

Two entries — Orange Balsam and Juniper thyme — are marked as nursery estimates rather than confirmed research data. Both are documented in university species lists, but detailed extension trial data for them is thin compared with the other ten; treat their listed height and hardiness as a practical starting point, not a guarantee.

6 Culinary Thyme Varieties for the Kitchen

Common (English) Thyme

The default choice, and correctly so. Thymus vulgaris carries the highest concentration of thymol and carvacrol of any widely sold thyme, which is why it’s the variety behind almost every jar of commercial dried thyme. RHS rates it H5, hardy to -10°C, and NC State lists it across USDA zones 5–9. It forms a stiff, woody-based mound 6–12 inches tall that gets woodier every year — for the pruning schedule that keeps it from turning into a leggy stick pile, see our full thyme care guide. For flavor, harvest timing matters more than variety: a peer-reviewed study on Thymus vulgaris chemistry found thymol content peaks at full bloom, reaching roughly 62% of the dried leaf’s essential oil, while antibacterial activity peaks slightly earlier, at the start of flowering. Cut for drying at full bloom; cut a week or two earlier for a fresher, more antimicrobial-leaning batch.

Lemon Thyme

Thymus × citriodorus is common thyme’s geraniol-chemotype cousin — same growth habit, same H5/USDA 5a–8b hardiness range per NC State’s species profile, completely different smell because its essential oil runs on geraniol and citral instead of thymol.

Use it anywhere a recipe wants a bridge between herbal and citrus — fish, tea, roast chicken, even lemon bars. Straight-species lemon thyme has plain green leaves; the named cultivars are where the ornamental value shows up: ‘Archers Gold’ (variegated foliage), ‘Doone Valley’ (gold leaf tips through fall and winter), and ‘Silver Queen’ (silvery leaves, same lemon fragrance).

Silver Thyme

“Silver thyme” isn’t a distinct species — it’s the common name nurseries give to T. × citriodorus ‘Silver Queen’ or T. vulgaris ‘Argenteus’, two unrelated variegated cultivars with cream-to-silver leaf margins. The flavor runs milder than straight lemon or common thyme, since variegated foliage generally photosynthesizes less efficiently than solid green and tends to produce less essential oil, but it still earns its space as a front-of-border edible that tastes like something. Same H5, roughly zone 5–8 range as its parent species.

Orange Balsam Thyme

A citriodorus-type cultivar bred for an orange-and-pine scent rather than lemon — herb growers describe it as one of the few thymes where the citrus note reads as orange instead of lemon, which makes it useful in baking and fruit-forward dishes where straight lemon thyme would clash. Formal extension data on this specific cultivar is thin; treat the commonly listed zone 5–8 range and 6–12 inch height as a practical nursery estimate, and expect it to behave in the garden like other citriodorus-type thymes.

Broadleaf Thyme

Thymus pulegioides gets overlooked because its common name undersells it — “broad-leaved” sounds ornamental, not culinary — but it’s actually one of the most pungent thymes available, RHS-rated H5 and hardy to USDA zone 4. It’s also the strongest pollinator pick of the twelve: a peer-reviewed study published in Scientific Reports found that thyme’s carvacrol and thymol — both abundant in broadleaf thyme’s essential oil — suppress the bacteria behind European foulbrood, a serious honeybee brood disease, at concentrations well below what naturally occurs in the plant’s own pollen. Plant it where foraging bees will actually find it, not tucked behind taller perennials.

Caraway Thyme

Thymus herba-barona is technically a groundcover — RHS lists it as mat-forming at just 2–4 inches tall — but it earns a spot in the culinary six because English cooks have used it to season roasted beef since the Middle Ages. The species name literally translates to “herb for flavoring a baron of beef,” a history documented by the Missouri Botanical Garden. The leaves smell distinctly of caraway rather than standard thyme, driven by carvone rather than thymol. Use it as an edible border along a path you’ll brush against, or work it into potato and root-vegetable dishes where you want a caraway note without adding actual caraway seed.

6 Creeping Thyme Varieties for Groundcover

These six spread instead of mound, rooting wherever a stem touches soil. All tolerate light foot traffic once established; how much depends on leaf density and growth speed, covered variety by variety below.

Wild Thyme (Mother-of-Thyme)

Thymus serpyllum is the straight species behind most of the named red, pink, and white creeping thyme cultivars sold in the US. NC State lists it across USDA zones 4a–9b — the widest cold-hardiness range of any thyme on this list — forming a 2–3 inch mat that spreads 3–10 inches per plant. It roots along the stem as it spreads, which is the mechanism that lets a few starter plants knit into solid coverage within a season or two; see our creeping thyme lawn guide for spacing and establishment timing.

Red Creeping Thyme ‘Coccineus’

This is the deep magenta-red groundcover in every “creeping thyme lawn” photo, and it’s also a small taxonomy mess worth flagging: nurseries sell it as Thymus praecox ‘Coccineus’, Thymus serpyllum ‘Coccineus’, and simply the “Coccineus Group,” because botanists haven’t fully settled which species it belongs to. The RHS currently catalogs both Thymus praecox and a standalone Coccineus Group, and rates each H5. Whatever the tag says, the plant itself is consistent: a dense, 2–4 inch mat with the darkest flower color of any widely sold thyme.

Woolly Thyme

Thymus pseudolanuginosus is the one variety on this list you shouldn’t plant expecting to cook with — most growers treat it as purely ornamental rather than culinary, since its silver, fuzzy foliage carries little of the aromatic oil that makes other thymes worth harvesting. What it does better than any other thyme here is handle heat and rock: RHS rates it H5, it stays under 4 inches, and its dense, hairy leaves make it one of the toughest mat-forming types against foot traffic, staying flatter underfoot than taller creeping cultivars. Use it for rock gardens and dry slopes, not the herb bed.

Elfin Thyme

A dwarf cultivar of wild thyme (Thymus serpyllum ‘Elfin’) that tops out around 1 inch tall and grows slowly enough that it’s the best choice for tight spaces — between stepping stones, in the cracks of a flagstone path, anywhere a taller creeper would eventually swallow the gap. Its compact, dense structure keeps individual stems low and better protected from foot pressure than looser-growing cultivars, which is why it’s consistently recommended as the most traffic-tolerant thyme for high-use paths.

Pink Chintz Creeping Thyme

Thymus serpyllum ‘Pink Chintz’ pairs woolly, dark-green foliage with soft salmon-pink flowers — a gentler color than ‘Coccineus’ for gardeners who want the groundcover habit without the saturated red. NC State lists it alongside ‘Coccineus’, ‘Elfin’, and ‘Magic Carpet’ as one of the four most common wild thyme cultivars in the US nursery trade. It works well as border edging where you want bloom color without the plant reading as aggressive.

Juniper Thyme

Thymus leucotrichus shows up in NC State’s list of documented Thymus species, but rarely in extension fact sheets with detailed measurements — most of what’s published on it comes from nursery and grower sources rather than university trials. Expect a spreading, silvery-green mound in the 3–9 inch range, hardy to roughly USDA zone 5. It’s a rock-garden and scent-garden plant first; treat any specific height or hardiness figure you see for it as a practical estimate rather than confirmed research data.

Which Thyme to Plant Where

• Kitchen herb bed or containers you’ll harvest weekly: Common thyme or lemon thyme — highest oil yield, tolerates repeated cutting.
• Between pavers or a stepping-stone path: Elfin thyme — smallest, slowest, most traffic-tolerant.
• Replacing a section of lawn: Wild thyme or ‘Coccineus’ — widest cold range, fastest to knit into solid coverage.
• Dry rock garden or a hot, reflective slope: Woolly thyme or juniper thyme — both handle heat and drought better than they handle wet feet.
• Pollinator or cutting garden: Broadleaf thyme — most pungent bloom, best-documented bee benefit.
• Hot, humid Southeast or Gulf Coast gardens: skip the low, fuzzy creepers. Clemson Cooperative Extension notes that taller-growing thyme species with smooth leaves tolerate heat and humidity better than low-growing or woolly types — humidity trapped in dense, hairy foliage is what typically kills woolly thyme in the Southeast, not cold.

Hardiness and Care at a Glance

Nearly every thyme on this list — culinary and creeping alike — rates RHS H5, meaning cold tolerance usually isn’t what separates one type from another. Wild thyme’s USDA 4a–9b range is the outlier; everything else clusters around zones 5–8. What actually varies by type is soil drainage tolerance and heat/humidity handling, not the winter minimum. For the full watering schedule, pruning windows, and the old-wood rule that keeps woody culinary types from going bare in the center, see our complete thyme growing and care guide.

FAQ

Is creeping thyme edible?

Most creeping types are technically edible — wild thyme and ‘Coccineus’ carry usable levels of thymol — but they’re bred and grown for groundcover density, not flavor, and most gardeners never harvest them. Woolly thyme is the one variety worth naming directly as an exception: most growers treat it as a purely ornamental groundcover rather than a culinary variety, since its foliage carries little of the aromatic oil that makes other thymes worth cooking with.

What’s the actual difference between “thyme” and “creeping thyme”?

Growth habit, not species, in most cases. “Creeping thyme” refers to any low, mat-forming type — Thymus serpyllum, T. praecox, T. pseudolanuginosus — that roots along its stems as it spreads. “Thyme” alone usually means upright culinary types like T. vulgaris. A few species, like caraway thyme, blur the line by creeping close to the ground while still carrying enough aromatic oil to cook with.

Does creeping thyme spread on its own, or does it need to be divided?

It spreads on its own once established — that’s the point of the growth habit — rooting wherever a stem touches moist soil. Most gardeners space starter plants 8–12 inches apart and let them fill in over one to two growing seasons rather than propagating by division, though division works if you want to speed up coverage in a specific gap.

Which thyme smells the strongest?

By essential oil concentration, common thyme and broadleaf thyme test highest for thymol and carvacrol, the compounds responsible for thyme’s sharp, medicinal scent. Lemon and orange balsam types smell brighter but aren’t “stronger” in the same chemical sense — they’re built around a different terpene family entirely.

Can you plant culinary and creeping thyme next to each other?

Yes — they share the same sun, soil, and water requirements, so pairing an upright culinary type with a low creeping border is a common design choice, not a compatibility risk. The main conflict is space: creeping types will eventually grow over a culinary thyme’s base if planted too close, so give the culinary plant at least 12 inches of clearance.

Sources

• NC State Extension Gardener Plant Toolbox, Thymus (Thyme) — plants.ces.ncsu.edu/plants/thymus
• Iowa State University Extension and Outreach, All About Thyme — yardandgarden.extension.iastate.edu
• NC State Extension Gardener Plant Toolbox, Thymus × citriodorus (Lemon Thyme) — plants.ces.ncsu.edu
• NC State Extension Gardener Plant Toolbox, Thymus serpyllum — plants.ces.ncsu.edu
• RHS, Thymus vulgaris — rhs.org.uk
• RHS, Thymus praecox — rhs.org.uk
• RHS, Thymus serpyllum L. — rhs.org.uk
• RHS, Thymus pulegioides — rhs.org.uk
• RHS, Thymus herba-barona — rhs.org.uk
• RHS, Thymus pseudolanuginosus — rhs.org.uk
• Krzepiłko et al., Geraniol and Carvacrol in Essential Oil Bearing Thymus pulegioides, PMC — pmc.ncbi.nlm.nih.gov
• The terpenes of leaves, pollen, and nectar of thyme inhibit growth of bee disease-associated microbes, Scientific Reports (PMC) — cited above
• Clemson Cooperative Extension HGIC, Herbs factsheet — cited above
• Thymol content and antibacterial activity across bloom stages in Thymus vulgaris, PMC — pmc.ncbi.nlm.nih.gov
• Missouri Botanical Garden Plant Finder, Thymus herba-barona — cited above