Plant care
Bocking 14 Comfreytemperature & humidity
Symphytum x uplandicum 'Bocking 14'
More about bocking 14 comfrey
Ideal temperature for bocking 14 comfrey
Bocking 14 Comfrey is comfortable in any room a person is comfortable in, roughly -1 to 30°C (30 to 86°F). The mistakes are micro-climates: a north-facing window on a frosty night, a south-facing windowsill in a summer heatwave, the standing draught between an opened kitchen door and the radiator behind it. Read the room around the plant, not the thermostat. Below roughly -1°C growth pauses; cold beyond that pushes it into dormancy rather than killing it outright.
Cold tolerance & winter care
Bocking 14 Comfrey is comparatively hardy (USDA 3-9 (fully hardy perennial), 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 bocking 14 comfrey
Bocking 14 Comfrey sits happiest at around 40-70% relative humidity. Indifferent to humidity; a hardy temperate crop that performs in ordinary moist garden air with good results in cool, damp climates. 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.
Bocking 14 Comfrey temperature & humidity — frequently asked questions
What temperature is best for bocking 14 comfrey?
Bocking 14 Comfrey grows best between -1 to 30°C (30 to 86°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 bocking 14 comfrey tolerate?
Bocking 14 Comfrey starts to suffer below roughly -1°C. It tolerates a cold dormant period within USDA 3-9 (fully hardy perennial), but a wet cold root zone is more dangerous than cold air.
What humidity does bocking 14 comfrey need?
Bocking 14 Comfrey prefers about 40-70% relative humidity. Indifferent to humidity; a hardy temperate crop that performs in ordinary moist garden air with good results in cool, damp climates.
How do I raise humidity for bocking 14 comfrey?
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 bocking 14 comfrey live outside?
Bocking 14 Comfrey is rated for USDA zone 3-9 (fully hardy perennial) 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 bocking 14 comfrey care
In the UK? Keeping bocking 14 comfrey warm in a UK home covers the radiator, single-glazing and heating-season humidity angle. Temperature and humidity are one piece. See the full bocking 14 comfrey care guide, its cold-hardiness guide, and watering schedule — humidity and watering problems are easy to confuse.