Growli

Plant care

Coconut Thyme (Red Creeping Thyme) care

Thymus praecox 'Coccineus'

Also called Red Creeping Thyme, Coccineus Thyme.

RHS H5USDA 4-9Pet-safeIndoor 5-8 cm tall

Watering rhythm

10-14days

When the top 3-4 cm of soil is dry, roughly every 10-14 days once established

Light

Direct sun (at least 4-6 hours)

Soil

Lean, gritty, free-draining alkaline to neutral soil

Humidity

30-50%

Temp

10-27°C

Pet safety

Pet-safe

Mature size

5-8 cm tall

Care at a glance

Light

Aim for at least 4-6 hours of direct sun on the leaves. Needs full sun, at least 6 hours of direct light daily. Shade thins the mat, weakens flowering and invites rot; the more sun, the denser and more compact the growth. If your only bright window faces south, that's perfect for coconut thyme — same window any aroid would fry on.

Watering

Watering coconut thyme: when the top 3-4 cm of soil is dry, roughly every 10-14 days once established. The number that matters isn't the day of the week — it's how dry the top 2-3 cm of the pot feels. A finger in the soil tells you more than a watering app. After every watering, tip the saucer. Drought-tolerant once rooted. Water deeply but infrequently and let soil dry between waterings. Soggy ground is the main killer; reduce watering sharply in winter.

Soil and pot

Coconut Thyme grows best in lean, gritty, free-draining alkaline to neutral soil. Mix in coarse sand or fine gravel to sharpen drainage. Avoid rich, moisture-retentive compost; poor stony soil produces tighter, more aromatic growth and better flowering. A pot with a working drainage hole is non-negotiable for this species — even free-draining mix will turn soggy in a closed planter. If you love the look of a decorative pot without a hole, use it as a cachepot around an inner nursery pot you can lift out to water.

Humidity and temperature

Coconut Thyme sits happiest at around 30-50% humidity and 10-27°C (50-80°F). Prefers dry air and good airflow. High humidity and crowded, still conditions encourage fungal dieback in the centre of the mat. If you keep the room above 10 year-round and avoid placing the plant near a cold draught, a hot radiator, or an air-conditioning vent, you have already handled the two biggest indoor stressors.

Fertilising

Feed coconut thyme sparingly. Rarely needed. A light top-dressing of compost or a weak balanced feed once in spring is plenty; excess nitrogen produces lush, floppy, less fragrant growth prone to rot. Skip fertiliser entirely on a stressed, recently-repotted, or actively wilting plant — fertiliser salts make damage worse, not better. Wait for a round of healthy new growth before resuming a feeding rhythm.

Common problems

Below are the issues we see most often on coconut thyme in the Growli community. Each is annotated with the most common cause so you know where to start.

  • Centre diebackOlder mats brown and thin in the middle from poor airflow or damp. Shear after flowering and divide every few years to rejuvenate.
  • Root rotWet, heavy soil causes blackening and collapse. Improve drainage with grit and avoid overwatering, especially in winter.
  • Leggy, sparse growthToo little sun or over-feeding makes stems stretch and flower poorly. Site in full sun and keep soil lean.
  • Weed invasionGaps in the mat let weeds establish. Keep the carpet dense and hand-weed early before competitors take hold.

Propagation

Easiest by division of rooted runners in spring or autumn, or by softwood cuttings in early summer. Pieces of the creeping mat with roots attached transplant readily. Propagation is the cheapest, most satisfying way to expand a collection — and it doubles as insurance against losing a mature plant to an accident. Take a backup cutting once the parent is established and healthy.

Toxicity to pets

Coconut Thyme is pet-safe. ASPCA-listed as non-toxic to cats, dogs and horses. Thyme (Thymus species, including creeping thyme) is classified non-toxic; fresh or dried foliage is harmless if nibbled, though concentrated thyme essential oil should never be given to pets. If you keep cats, dogs, or curious children in the house, weigh placement carefully — a high shelf or a hanging planter is enough for casual safety. For severe ingestion incidents, call your local vet and the ASPCA Animal Poison Control Center (in the US, 888-426-4435).

Pet-safety status is sourced from the ASPCA Toxic and Non-Toxic Plant List, which catalogues the most-asked-about plants for cats, dogs, and horses.

Coconut Thyme care — frequently asked questions

What is the common name for Thymus praecox 'Coccineus'?

Thymus praecox 'Coccineus' is most commonly called Coconut Thyme, but it is also known as Red Creeping Thyme, Coccineus Thyme. The names refer to the same species, so care instructions for Coconut Thyme apply identically to anything sold as Red Creeping Thyme.

How much light does coconut thyme need?

Coconut Thyme grows best in direct sun (at least 4-6 hours). Needs full sun, at least 6 hours of direct light daily. Shade thins the mat, weakens flowering and invites rot; the more sun, the denser and more compact the growth.

How often should I water coconut thyme?

Water coconut thyme when the top 3-4 cm of soil is dry, roughly every 10-14 days once established. Drought-tolerant once rooted. Water deeply but infrequently and let soil dry between waterings. Soggy ground is the main killer; reduce watering sharply in winter. The finger-test (or lifting the pot to feel its weight) beats a fixed weekly calendar because pot size, light, and season all change how fast the soil dries.

Is coconut thyme toxic to cats and dogs?

Coconut Thyme is pet-safe. ASPCA-listed as non-toxic to cats, dogs and horses. Thyme (Thymus species, including creeping thyme) is classified non-toxic; fresh or dried foliage is harmless if nibbled, though concentrated thyme essential oil should never be given to pets.

What USDA hardiness zone does coconut thyme grow in?

Coconut Thyme is rated for USDA zone 4-9 (hardy perennial groundcover) and RHS hardiness H5. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.

Coconut Thyme deep-dive guides

Every aspect of coconut thyme care, each with its own calibrated guide:

Featured in these plant shortlists

Coconut Thyme qualifies for 2 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

Related guides

Coconut Thyme is also commonly called Red Creeping Thyme or Coccineus Thyme.