Plant care
Shrimp Planttemperature & humidity
Justicia brandegeeana
More about shrimp plant
Ideal temperature for shrimp plant
Shrimp Plant is comfortable in any room a person is comfortable in, roughly 16-29C ideal; keep above 10C (60-85F ideal; keep above 50F). 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 16°C growth pauses; cold beyond that pushes it into dormancy rather than killing it outright.
Cold tolerance & winter care
Shrimp Plant is comparatively hardy (USDA USDA 9-11 (roots may survive in zone 8 with heavy mulch; RHS hardiness H1B). Grown as a houseplant or summer container plant in colder zones., RHS undefined). 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 shrimp plant
Shrimp Plant sits happiest at around 40-60% (moderate to high) relative humidity. Appreciates above-average humidity as a tropical species. In dry indoor air, group plants, sit the pot on a pebble-and-water tray, or run a humidifier. Low humidity and dry heat invite spider mites. 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.
Shrimp Plant temperature & humidity — frequently asked questions
What temperature is best for shrimp plant?
Shrimp Plant grows best between 16-29C ideal; keep above 10C (60-85F ideal; keep above 50F). 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 shrimp plant tolerate?
Shrimp Plant starts to suffer below roughly 16°C. It tolerates a cold dormant period within USDA USDA 9-11 (roots may survive in zone 8 with heavy mulch; RHS hardiness H1B). Grown as a houseplant or summer container plant in colder zones., but a wet cold root zone is more dangerous than cold air.
What humidity does shrimp plant need?
Shrimp Plant prefers about 40-60% (moderate to high) relative humidity. Appreciates above-average humidity as a tropical species. In dry indoor air, group plants, sit the pot on a pebble-and-water tray, or run a humidifier. Low humidity and dry heat invite spider mites.
How do I raise humidity for shrimp plant?
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 shrimp plant live outside?
Shrimp Plant is rated for USDA zone USDA 9-11 (roots may survive in zone 8 with heavy mulch; RHS hardiness H1B). Grown as a houseplant or summer container plant in colder zones.. 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 shrimp plant care
In the UK? Keeping shrimp plant warm in a UK home covers the radiator, single-glazing and heating-season humidity angle. Temperature and humidity are one piece. See the full shrimp plant care guide, its cold-hardiness guide, and watering schedule — humidity and watering problems are easy to confuse.