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Plant care

Treneague Chamomile (non-flowering chamomile) care

Chamaemelum nobile 'Treneague'

Also called Treneague chamomile, non-flowering chamomile, lawn chamomile.

RHS H5USDA 4-9Toxic to petsIndoor Around 5-10 cm tall

Watering rhythm

Direct sun (at least 4-6 hours)

Weekly until established, then only in extended dry spells

Light

Direct sun (at least 4-6 hours)

Soil

Light, free-draining sandy or loamy soil

Humidity

30-60%

Temp

-5 to 27°C

Pet safety

Toxic to pets

Mature size

Around 5-10 cm tall

Care at a glance

Light

Most houseplants will scorch where treneague chamomile thrives. Give it the windowsill you'd otherwise leave empty because everything else burned there. Needs full sun for a dense, tight mat; in shade it grows thin and patchy. At least 6 hours of direct light keeps the aromatic foliage compact and healthy. A plant moved abruptly from low light to direct sun bleaches in 48 hours — always acclimatise over a week.

Watering

Aim for weekly until established, then only in extended dry spells for treneague chamomile, but treat that as a starting point rather than a rule. A south-facing summer windowsill will dry the pot twice as fast as a north-facing winter room. Lift the pot; if it feels noticeably lighter than it did wet, water it. Water new plantings regularly to knit the mat together; mature chamomile is drought-tolerant but a dry summer can cause browning, so irrigate to keep a lawn green.

Soil and pot

Treneague Chamomile grows best in light, free-draining sandy or loamy soil. Demands sharp drainage; waterlogged or heavy clay soil causes rot and bare patches. A neutral to slightly acidic, low-fertility soil gives the best dense, springy growth. 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

Treneague Chamomile sits happiest at around 30-60% humidity and -5 to 27°C (23 to 81°F). Prefers open, airy conditions; good air movement keeps the dense mat dry and discourages fungal dieback in the cushion of foliage. If you keep the room above 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 treneague chamomile sparingly. Feed sparingly or not at all; lush growth from rich soil or fertiliser is weak and opens the mat to weeds. An occasional light, balanced feed in spring is the most it needs. 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 treneague chamomile in the Growli community. Each is annotated with the most common cause so you know where to start.

  • Bare patches in shade or wetThe mat thins and dies out in shaded or poorly drained spots; site it in full sun on free-draining soil and patch gaps with fresh divisions.
  • Weed invasionA non-flowering chamomile lawn cannot be selectively weeded easily; hand-weed regularly while the mat establishes its dense cover.
  • Wear in high-traffic lanesHeavy footfall flattens and wears the mat; use it as a fragrant accent or seat rather than a hard-wearing pathway.
  • Slow establishmentPlug plants take a full season to close into a lawn; plant at 15-20 cm spacing and keep watered to speed coverage.

Propagation

Strictly by division or rooted offsets, as 'Treneague' is non-flowering and sets no seed; lift and split clumps or detach rooted runners in spring. 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

Treneague Chamomile is toxic to pets. The ASPCA lists chamomile (Chamaemelum nobile / Anthemis nobilis, including Roman chamomile) as toxic to dogs, cats and horses. The toxic principles are volatile oil, bisabolol, chamazulene, anthemic acid and tannic acid; clinical signs include contact dermatitis, vomiting, diarrhoea, anorexia and allergic reactions, with bleeding tendencies after prolonged exposure. Keep pets from grazing a chamomile lawn. 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.

Treneague Chamomile care — frequently asked questions

What is the common name for Chamaemelum nobile 'Treneague'?

Chamaemelum nobile 'Treneague' is most commonly called Treneague Chamomile, but it is also known as Treneague chamomile, non-flowering chamomile, lawn chamomile. The names refer to the same species, so care instructions for Treneague Chamomile apply identically to anything sold as non-flowering chamomile.

How much light does treneague chamomile need?

Treneague Chamomile grows best in direct sun (at least 4-6 hours). Needs full sun for a dense, tight mat; in shade it grows thin and patchy. At least 6 hours of direct light keeps the aromatic foliage compact and healthy.

How often should I water treneague chamomile?

Water treneague chamomile weekly until established, then only in extended dry spells. Water new plantings regularly to knit the mat together; mature chamomile is drought-tolerant but a dry summer can cause browning, so irrigate to keep a lawn green. 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 treneague chamomile toxic to cats and dogs?

Treneague Chamomile is toxic to pets. The ASPCA lists chamomile (Chamaemelum nobile / Anthemis nobilis, including Roman chamomile) as toxic to dogs, cats and horses. The toxic principles are volatile oil, bisabolol, chamazulene, anthemic acid and tannic acid; clinical signs include contact dermatitis, vomiting, diarrhoea, anorexia and allergic reactions, with bleeding tendencies after prolonged exposure. Keep pets from grazing a chamomile lawn.

What USDA hardiness zone does treneague chamomile grow in?

Treneague Chamomile is rated for USDA zone 4-9 (hardy in temperate gardens) and RHS hardiness H5. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.

Treneague Chamomile deep-dive guides

Every aspect of treneague chamomile care, each with its own calibrated guide:

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Treneague Chamomile qualifies for 1 curated Growli shortlist — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

Related guides

Treneague Chamomile is also known as Treneague chamomile, non-flowering chamomile, and lawn chamomile.