Plant care
Walker's Low Catminttemperature & humidity
Nepeta × faassenii 'Walker's Low'
More about walker's low catmint
Ideal temperature for walker's low catmint
Aim for −30°C to 35°C (−22°F to 95°F) on the thermostat and you've handled the easy part. The hard part is the half-metre around the plant: window glass that drops to near-freezing on a January night, a radiator pumping out hot dry air, a draught from an opened front door. Move the plant 30 cm and you've usually fixed the problem. Below roughly 30°C growth pauses; cold beyond that pushes it into dormancy rather than killing it outright.
Cold tolerance & winter care
Walker's Low Catmint is comparatively hardy (USDA 3–8, RHS H7). Within that range it tolerates a cold dormant spell outdoors; outside it, grow it in a container you can move under cover or overwinter in a cool but frost-free spot. Hardiness assumes an established plant in well-drained soil — a wet, cold root zone kills far more plants than cold air alone.
Humidity for walker's low catmint
Walker's Low Catmint sits happiest at around 30–60% relative humidity. Prefers low to moderate humidity. Ensure good airflow to prevent powdery mildew. Performs well in the drier conditions of Mediterranean-style and prairie gardens. The usual low-humidity tell is crisp brown leaf tips and edges while the soil moisture is fine — a sign the air, not the watering, is the problem. If you need to raise it, the reliable methods are grouping plants together, standing the pot on a tray of damp pebbles (the pot above the waterline, never in it), or running a small humidifier in winter when indoor heating dries the air most. Misting is the least effective — it raises humidity for minutes, not hours.
Walker's Low Catmint temperature & humidity — frequently asked questions
What temperature is best for walker's low catmint?
Walker's Low Catmint grows best between −30°C to 35°C (−22°F to 95°F). Keep it out of cold draughts, off freezing windowsills in winter, and away from the hot dry air directly above radiators — the extremes matter far more than the average room temperature.
How cold can walker's low catmint tolerate?
Walker's Low Catmint starts to suffer below roughly 30°C. It tolerates a cold dormant period within USDA 3–8, but a wet cold root zone is more dangerous than cold air.
What humidity does walker's low catmint need?
Walker's Low Catmint prefers about 30–60% relative humidity. Prefers low to moderate humidity. Ensure good airflow to prevent powdery mildew. Performs well in the drier conditions of Mediterranean-style and prairie gardens.
How do I raise humidity for walker's low catmint?
Group it with other plants, stand the pot on a tray of damp pebbles (kept above the waterline), or run a small humidifier in winter. Misting only helps for a few minutes, so it is the weakest option for a plant that genuinely needs more humidity.
Can walker's low catmint live outside?
Walker's Low Catmint is rated for USDA zone 3–8 and RHS hardiness H7. Within that range it can stay outdoors; outside it, grow it in a moveable container and protect the roots from a wet, cold winter.
More walker's low catmint care
In the UK? Keeping walker's low catmint warm in a UK home covers the radiator, single-glazing and heating-season humidity angle. Temperature and humidity are one piece. See the full walker's low catmint care guide, its cold-hardiness guide, and watering schedule — humidity and watering problems are easy to confuse.