Nepeta sibirica 'Souvenir d'André Chaudron' (Siberian catmint) care

Light

Most houseplants will scorch where nepeta sibirica 'souvenir d'andré chaudron' thrives. Give it the windowsill you'd otherwise leave empty because everything else burned there. Full sun gives the strongest stems and heaviest flowering. It tolerates light shade but tends to grow taller, weaker and floppier with reduced bloom. A plant moved abruptly from low light to direct sun bleaches in 48 hours — always acclimatise over a week.

Watering

Aim for when the top few centimetres of soil dry; sparingly once established for nepeta sibirica 'souvenir d'andré chaudron', 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. Drought-tolerant once settled. Water through the first season and during prolonged dry spells. It dislikes waterlogged ground, which encourages rot.

Soil and pot

Nepeta sibirica 'Souvenir d'André Chaudron' grows best in free-draining, moderately fertile soil. Best in well-drained soil of average fertility; tolerates poorer, dry and chalky ground. Sharp winter drainage matters most. Rich, moist soil produces lax growth and increases its spreading vigour. 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

Nepeta sibirica 'Souvenir d'André Chaudron' sits happiest at around Ambient outdoor humidity humidity and -34 to 29°C (-29 to 84°F). A hardy, sun-loving perennial preferring dry air and open, airy sites; humid, still conditions can encourage mildew. 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 nepeta sibirica 'souvenir d'andré chaudron' sparingly. Low requirement. A light spring mulch suffices; avoid rich feeding, which weakens the stems and makes the running roots spread more aggressively. 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 nepeta sibirica 'souvenir d'andré chaudron' in the Growli community. Each is annotated with the most common cause so you know where to start.

• Spreading by runners — Rhizomes can colonise beyond their spot, especially in rich, moist soil. Divide regularly and dig out unwanted shoots to control spread.
• Flopping stems — Shade or rich soil makes the tall stems splay. Grow in full sun, keep soil lean, and shear after the first flush for fresh growth.
• Cats damaging plants — The catmint scent draws cats that crush young growth. Shield new plants with twiggy supports until they bulk up.
• Powdery mildew — Possible in humid, crowded or drought-stressed conditions. Improve spacing and airflow and cut back affected stems.

Propagation

Propagate by division in spring or autumn (which also controls its spread), or by basal softwood cuttings in late 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

Nepeta sibirica 'Souvenir d'André Chaudron' is mildly toxic to pets. The ASPCA lists Catnip (Nepeta cataria), the genus type species, as toxic to cats, with nepetalactone causing vomiting, diarrhoea and either sedation or stimulation. As a Nepeta, 'Souvenir d'André Chaudron' should be treated the same; verify any specific concern with a vet. Cats are typically attracted to it and only mildly affected. 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.

Nepeta sibirica 'Souvenir d'André Chaudron' deep-dive guides

Every aspect of nepeta sibirica 'souvenir d'andré chaudron' care, each with its own calibrated guide:

• Nepeta sibirica 'Souvenir d'André Chaudron' watering schedule
• Nepeta sibirica 'Souvenir d'André Chaudron' light requirements
• Best soil mix for nepeta sibirica 'souvenir d'andré chaudron'
• Nepeta sibirica 'Souvenir d'André Chaudron' fertilizing guide
• When to repot nepeta sibirica 'souvenir d'andré chaudron'
• How to propagate nepeta sibirica 'souvenir d'andré chaudron'
• Nepeta sibirica 'Souvenir d'André Chaudron' growth rate & size
• Nepeta sibirica 'Souvenir d'André Chaudron' cold hardiness
• Nepeta sibirica 'Souvenir d'André Chaudron' temperature & humidity
• Is nepeta sibirica 'souvenir d'andré chaudron' toxic to cats & dogs?
• Is nepeta sibirica 'souvenir d'andré chaudron' toxic to cats?
• Is nepeta sibirica 'souvenir d'andré chaudron' toxic to dogs?
• Getting nepeta sibirica 'souvenir d'andré chaudron' to bloom

Featured in these plant shortlists

Nepeta sibirica 'Souvenir d'André Chaudron' qualifies for 4 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

• Best drought-tolerant houseplants — Houseplants that prefer to dry out — forgiving of forgotten watering and ideal for travel or busy weeks.
• Best flowering houseplants — Indoor plants grown for their blooms — selected from the flowering species in Growli’s plant-care library.
• Best houseplants for full sun — Houseplants that want direct sun — the species for a hot south or west-facing windowsill where shade-lovers scorch.
• Best houseplants for a cool room — Houseplants that tolerate cool conditions down to about 10°C — for an unheated spare room, hallway, porch or a home kept cool.
• Browse all 29 plant shortlists — pet-safe, low-light, drought-tolerant and more

Related guides

Nepeta sibirica 'Souvenir d'André Chaudron' is also commonly called Siberian catmint or Blue Beauty catmint.

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