Plant care
Toothed Fly Bushtemperature & humidity
Roridula dentata
More about toothed fly bush
Ideal temperature for toothed fly bush
Temperature kills fewer toothed fly bush plants than you'd think. What kills them is the micro-climate within a normal-temperature room — a leaf pressed against single-glazed winter glass, the hot dry updraft directly above a radiator, the cold blast from an AC vent. The thermostat reading at 8–25°C (46–77°F) is fine; the spot you put the plant in matters more. Below roughly 8°C the damage starts — soft blackened patches, translucent leaves, sometimes overnight.
Cold tolerance & winter care
Toothed Fly Bush is frost-tender (USDA 9-10, RHS H2). It cannot survive a frost, so in most of the US and UK it lives indoors year-round or summers outside and comes back in well before the first autumn frost — once nights drop toward 10-12°C is the cue, not the first frost warning. Acclimate it over a week when moving between indoors and out so the leaves do not shock.
Humidity for toothed fly bush
Toothed Fly Bush sits happiest at around 60–90% relative humidity. High ambient humidity is preferred, reflecting Western Cape coastal conditions. Humidity below 50% causes the resin to dry and lose stickiness. A pebble-and-water humidity tray beneath the pot is helpful. 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.
Toothed Fly Bush temperature & humidity — frequently asked questions
What temperature is best for toothed fly bush?
Toothed Fly Bush grows best between 8–25°C (46–77°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 toothed fly bush tolerate?
Toothed Fly Bush starts to suffer below roughly 8°C. It is frost-tender and will be damaged or killed by a frost, so bring it indoors once nights fall toward 10-12°C.
What humidity does toothed fly bush need?
Toothed Fly Bush prefers about 60–90% relative humidity. High ambient humidity is preferred, reflecting Western Cape coastal conditions. Humidity below 50% causes the resin to dry and lose stickiness. A pebble-and-water humidity tray beneath the pot is helpful.
How do I raise humidity for toothed fly bush?
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 toothed fly bush live outside?
Toothed Fly Bush is rated for USDA zone 9-10 and RHS hardiness H2. Outside that range it must come indoors before the first frost — treat any outdoor stint as a summer holiday, not a permanent home.
More toothed fly bush care
In the UK? Keeping toothed fly bush warm in a UK home covers the radiator, single-glazing and heating-season humidity angle. Temperature and humidity are one piece. See the full toothed fly bush care guide, its cold-hardiness guide, and watering schedule — humidity and watering problems are easy to confuse.