Breckland Thyme
Thymus serpyllum
Creeping Thyme, also known as Breckland Thyme, is a hardy, aromatic herb native to Europe. Its low-growing nature and vibrant flowers make it a popular choice for ground cover and culinary use, adding flavor to dishes while attracting pollinators.
Everything it needs
9 essentials at a glance
Watering
Creeping Thyme prefers well-drained soil and should be watered sparingly.
Water every 2-3 weeks during the growing season, allowing the soil to dry out between waterings. In winter, reduce watering to once a month or less. Signs of over-watering include yellowing leaves and root rot, while under-watering may cause wilting and browning of leaf tips.
Light
Creeping Thyme thrives in full sun, requiring at least 6-8 hours of direct sunlight daily.
Ideal placements include south or west-facing gardens or containers that receive ample sunlight. It can tolerate partial shade but may become leggy and less vigorous in such conditions.
Soil
This plant prefers sandy or loamy soil with excellent drainage and a pH range of 6.0 to 8.0.
A recommended potting mix includes a blend of potting soil, sand, and perlite to enhance drainage. Avoid heavy clay soils that retain moisture.
Humidity
Creeping Thyme prefers low to moderate humidity levels, ideally between 30-50%.
To increase humidity, mist the plant lightly or place it on a pebble tray with water. Signs of humidity stress include browning leaf edges and stunted growth.
Temperature
The ideal temperature range for Creeping Thyme is 60-75°F (15-24°C).
It is hardy in USDA zones 4-9, tolerating light frost but may suffer in extreme heat above 90°F (32°C). During winter, it can withstand cold temperatures but should be protected from harsh winds.
Fertilizing
Use a balanced, slow-release fertilizer with an NPK ratio of 10-10-10.
Fertilize in early spring and again in mid-summer, applying at half the recommended strength. Signs of nutrient deficiency include stunted growth and pale leaves, indicating a need for fertilization.
Pruning
Prune Creeping Thyme in late spring after flowering to encourage bushier growth.
Use sharp, clean scissors or pruning shears to cut back the stems by one-third. Deadheading spent flowers can promote additional blooms and prevent the plant from becoming woody.
Repotting
Repot Creeping Thyme every 2-3 years or when it outgrows its pot.
Choose a pot that is 1-2 inches larger in diameter. Signs it needs repotting include roots growing out of the drainage holes and stunted growth. To repot, gently remove the plant from its pot, loosen the roots, and place it in fresh potting mix.
Propagation
Creeping Thyme can be propagated through stem cuttings, division, or seeds.
For stem cuttings, take 4-6 inch cuttings in spring, remove lower leaves, and place them in moist potting mix. Keep the cuttings in a warm, bright area until roots develop. Division can be done in spring or fall by separating established clumps and replanting them.
When it's unhappy
Yellow leaves
Why it happens
Over-watering or poor drainage.
How to fix it
Reduce watering frequency and ensure the pot has adequate drainage holes.
Leggy growth
Why it happens
Insufficient sunlight.
How to fix it
Move the plant to a sunnier location to encourage compact growth.
Root rot
Why it happens
Excess moisture in the soil.
How to fix it
Allow the soil to dry out completely and consider repotting in fresh, well-draining soil.
Browning leaf tips
Why it happens
Under-watering or low humidity.
How to fix it
Increase watering frequency and consider misting the plant or using a humidity tray.
Pests (aphids, spider mites)
Why it happens
Dry conditions or stress.
How to fix it
Regularly inspect the plant and treat infestations with insecticidal soap or neem oil.
Care through the year
Spring
In spring, prune back any dead stems and fertilize with a balanced fertilizer to encourage new growth. Ensure the plant receives plenty of sunlight as it begins to grow.
Summer
During summer, water every 2-3 weeks and monitor for pests. Deadhead spent flowers to encourage more blooms and maintain a tidy appearance.
Fall
In fall, reduce watering as temperatures drop. Consider mulching around the base to protect roots from frost and prepare for winter.
Winter
In winter, limit watering to once a month and protect the plant from harsh winds. If grown in pots, consider bringing them indoors during extreme cold spells.
Toxicity & Safety
Creeping Thyme is non-toxic to pets and children. It is safe to grow around cats and dogs, with no known harmful effects from ingestion.
Good to know
How often should I water my Creeping Thyme?
Water Creeping Thyme every 2-3 weeks during the growing season, allowing the soil to dry out between waterings. In winter, reduce watering to once a month.
What type of soil is best for Creeping Thyme?
Creeping Thyme thrives in sandy or loamy soil with excellent drainage and a pH range of 6.0 to 8.0. A mix of potting soil, sand, and perlite is ideal.
Can I grow Creeping Thyme indoors?
Yes, Creeping Thyme can be grown indoors as long as it receives plenty of sunlight, ideally at least 6-8 hours of direct light each day.
Why are my Creeping Thyme leaves turning brown?
Browning leaves may indicate under-watering or low humidity. Ensure you are watering adequately and consider increasing humidity around the plant.
When should I prune my Creeping Thyme?
Prune Creeping Thyme in late spring after flowering to promote bushier growth and remove any dead or woody stems.
Is Creeping Thyme deer resistant?
Yes, Creeping Thyme is known to be deer resistant due to its strong aroma, making it less appealing to these animals.
How can I propagate Creeping Thyme?
Creeping Thyme can be propagated through stem cuttings, division, or seeds. Stem cuttings should be taken in spring and placed in moist potting mix until roots develop.
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