Plant care
Pecan 'Caddo'temperature & humidity
Carya illinoinensis 'Caddo'
More about pecan 'caddo'
Ideal temperature for pecan 'caddo'
Pecan 'Caddo' is comfortable in any room a person is comfortable in, roughly -15 to 38°C (5 to 100°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 -15°C growth pauses; cold beyond that pushes it into dormancy rather than killing it outright.
Cold tolerance & winter care
Pecan 'Caddo' is comparatively hardy (USDA 6-9 (broadly adaptable across the pecan belt), RHS H5). 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 pecan 'caddo'
Pecan 'Caddo' sits happiest at around Ambient (outdoor) relative humidity. An outdoor tree; ambient humidity is not a care factor. Good scab resistance lets 'Caddo' perform across both arid Western and humid Southeastern 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.
Pecan 'Caddo' temperature & humidity — frequently asked questions
What temperature is best for pecan 'caddo'?
Pecan 'Caddo' grows best between -15 to 38°C (5 to 100°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 pecan 'caddo' tolerate?
Pecan 'Caddo' starts to suffer below roughly -15°C. It tolerates a cold dormant period within USDA 6-9 (broadly adaptable across the pecan belt), but a wet cold root zone is more dangerous than cold air.
What humidity does pecan 'caddo' need?
Pecan 'Caddo' prefers about Ambient (outdoor) relative humidity. An outdoor tree; ambient humidity is not a care factor. Good scab resistance lets 'Caddo' perform across both arid Western and humid Southeastern climates.
How do I raise humidity for pecan 'caddo'?
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 pecan 'caddo' live outside?
Pecan 'Caddo' is rated for USDA zone 6-9 (broadly adaptable across the pecan belt) and RHS hardiness H5. 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 pecan 'caddo' care
In the UK? Keeping pecan 'caddo' warm in a UK home covers the radiator, single-glazing and heating-season humidity angle. Temperature and humidity are one piece. See the full pecan 'caddo' care guide, its cold-hardiness guide, and watering schedule — humidity and watering problems are easy to confuse.