How to Grow Thyme
Thymus vulgaris
Thyme is a sun-loving Mediterranean subshrub needing very free-draining, lean soil. Grow in raised beds or terracotta with gritty mix; avoid winter wet. Water sparingly once established. Shear lightly after flowering to keep a tight mound and prevent woody centres; don’t cut into old, leafless wood. Replace tired plants every few years from cuttings or divisions. Harvest sprigs as needed—oils are strongest on sun-soaked growth. Great for edging and pollinator-rich herb beds.
Yearly Lifecycle
Care Essentials
Rarely needed. Thrives in poor, well-drained soil.
Watch For
- Root rot in wet soil
- Generally pest-free
Companions
Rosemary, Lavender, Sage, Strawberries
Care Requirements
Light
Full sun, 6+ hours for best flavour
Full sun is essential. Thyme needs the hottest, brightest spot you can offer. At least 6 hours of direct sun daily for the strongest flavour.
Watering
Sparingly; very drought-tolerant
Water sparingly once established. Thyme is drought-tolerant and hates wet roots. In the UK, winter wet kills far more plants than cold.
Fertilizing
Rarely needed; lean soil gives best flavour
Rarely needed. Thyme thrives in poor, lean soil. Rich feeding produces lush but flavourless growth. A light top-dressing of grit is more useful than fertiliser.
Pruning
Light shear after flowering; avoid old wood
Shear lightly after flowering to keep plants compact and prevent woody centres. Never cut into old bare wood as it will not regrow.
Harvesting
Snip as needed; best flavour before flowering
Snip sprigs as needed year-round. Flavour is strongest just before flowering on sun-soaked growth. Regular picking keeps plants bushy.
Growing Tips
Sun and stone
Choose the brightest, driest spot and add grit or plant on a slight mound.
Annual shear
Trim lightly after bloom to keep plants dense and long-lived.
Renew from cuttings
Root non-flowering shoots in summer to replace woody clumps.
Pests & Diseases
Pest Rosemary Beetle
Identification: Metallic green-and-purple striped beetles and greyish larvae on shoot tips and flowers
- Hand-pick adults and larvae — shake plants over a sheet in cool mornings
- Encourage ground beetles and parasitic wasps
- Pyrethrin-based contact spray as a last resort, applied in the evening
Pest Leafhoppers
Identification: Pale stippled mottling on upper leaf surfaces; tiny pale insects jump away when disturbed
- Tolerate — damage is cosmetic and rarely significant
- Encourage spiders and other natural predators
- Rarely warranted
Disease Root Rot Phytophthora spp.
Symptoms: Wilting despite moist soil, blackened stem bases, plant collapse; often sudden in winter or early spring
Treatment: Remove and destroy affected plants. Improve drainage before replanting.
Prevention: Plant in very free-draining soil with added grit. Avoid overwatering. Use raised beds or containers on clay.
Disease Grey Mould (Botrytis) Botrytis cinerea
Symptoms: Fuzzy grey mould on stems and foliage, especially in damp conditions; dieback of affected shoots
Treatment: Prune out affected growth. Improve air circulation.
Prevention: Ensure excellent drainage. Avoid overcrowding. Remove dead foliage promptly.
Popular Varieties
Common
The classic culinary thyme (Thymus vulgaris). Upright, woody subshrub to 30 cm with tiny grey-green aromatic leaves and pale lilac flowers in summer. The most widely used thyme in cooking.
Lemon
A citrus-scented hybrid (Thymus × citriodorus) with bright green leaves and a fresh lemon aroma. Excellent with fish, poultry, and in desserts.
Creeping
Low, mat-forming ground cover (Thymus serpyllum) reaching only 5-10 cm tall. Ideal between paving stones and as a lawn substitute. Tiny purple flowers attract pollinators.
Woolly
Soft, fuzzy grey-green foliage forming a dense, flat mat (Thymus pseudolanuginosus). Primarily ornamental — excellent for rock gardens and xeriscaping. Rarely flowers.
Red Creeping
A vibrant ground cover (Thymus praecox 'Coccineus') with deep magenta-pink flowers in early summer. Grows just 5 cm tall, spreading to form a colourful carpet. Tough enough for light foot traffic.
Silver Queen
A variegated lemon thyme cultivar (Thymus × citriodorus 'Silver Queen') with dark green leaves edged in creamy white. Lemon-scented, bushy habit to 25 cm. Both ornamental and culinary.
Wild
The native wild thyme (Thymus serpyllum) of European grasslands. A prostrate, creeping subshrub with small rounded leaves and whorls of pink-purple flowers beloved by bees. Aromatic but milder than common thyme.
Caraway
A Corsican species (Thymus herba-barona) with a distinctive caraway-like fragrance. Low creeping habit to 10 cm, dark green leaves, and pale pink flowers. Excellent in meat dishes as a caraway substitute.
Elfin
One of the smallest thymes (Thymus serpyllum 'Elfin'), forming tight cushions just 2-3 cm tall. Tiny rounded leaves and sparse pink flowers. Perfect miniature ground cover for troughs, fairy gardens, and between flagstones.
Orange
An aromatic cultivar (Thymus fragrantissimus) with narrow grey-green leaves releasing a warm orange-citrus scent when crushed. Upright habit to 30 cm with pale pink flowers. Lovely in herbal teas and with poultry.
Spacing & Planting
| Plant spacing | 20 cm |
| Row spacing | 30 cm |
| Mature height | 20 cm |
| Mature spread | 30 cm |
For common thyme (Thymus vulgaris). Creeping thymes can be planted closer to form a groundcover.
