Inch plant care guide
Tradescantia zebrina
Quick answer
Water your inch plant when the top 3 cm (1.2 in) of soil feel dry to the touch. In summer that’s typically every 6 to 8 days.
- WateringEvery 6 to 8 days · summer
Every 11 to 17 days · winter - LightBright, indirect light
- Climate18–27 °C (64–81 °F)
- Pet safetyToxic to cats and dogs
Not sure it’s this plant?Get the free Botanicaly app and find out with a photoWhen and how to water
3 cm (1.2 in)
- Summer · Jun–AugEvery 6 to 8 days
- Winter · Dec–FebEvery 11 to 17 days
Use room-temperature water and let any excess drain. Never leave the pot sitting in standing water.
Adjust the timing for the light at the plant, the pot’s size and material, and the humidity indoors. Terracotta dries faster than glazed ceramic.
Work out your own rhythm with the watering calculator.
Light and placement
Bright, indirect light
Inch plant thrives in bright, indirect light. Direct midday sun can scorch the leaves. Place it 1–2 meters back from an east or west window, or behind a sheer curtain on a south window.
Feeding
Feed your inch plant every 30 days while it’s actively growing. Use a balanced liquid houseplant fertilizer at half the strength on the label, and only on soil that’s already damp. Feeding dry roots can scorch them.
When growth pauses, skip the fertilizer and let it rest.
Temperature & humidity
Climate18–27 °C (64–81 °F)
Humidity50–70%
During leafy growth, aim for 18–27 °C (64–81 °F). For routine indoor care, keep it above about 10 °C (50 °F) and avoid cold drafts. This is a care guideline, not an exact damage threshold. Cooler overwintering depends on the species and its rest conditions.
It does best at 50–70% humidity. It doesn’t need misting.
Common problems
Yellowing, drooping, and dry edges often point to watering or drainage. Compare the signs before changing the routine.
Find what’s wrong
Toxic to pets?
Yes. Keep it out of reach.
Wear gloves when you cut or repot it. Keep the sap away from your eyes and skin, and wash your hands afterwards.
Pet-safety information in the JungleBook uses NC State Extension Plant Toolbox where available. It is reference information, not veterinary advice.
Full inch plant toxicity guide →
Pet-safe alternatives with similar light
Common questions
How often should I water an inch plant?
Water your inch plant (Tradescantia zebrina) when the top 3 cm (1.2 in) of soil feel dry to the touch. In summer, that’s typically every 6 to 8 days. In winter, slow down to every 11 to 17 days.
How much light does an inch plant need?
Inch plant thrives in bright, indirect light. Direct midday sun can scorch the leaves. Place it 1–2 meters back from an east or west window, or behind a sheer curtain on a south window.
Is inch plant safe for cats and dogs?
The source reports mouth irritation after chewing, stomach irritation after chewing, skin redness and irritation after sap or leaf contact. Keep inch plant out of reach of pets, or pick a non-toxic alternative like baby rubber plant, watermelon peperomia, lady palm, or scarlet star bromeliad.
Why is my inch plant turning yellow or drooping?
Yellowing, drooping and brown tips can have several causes. Check the potting mix before adding water and follow this plant’s watering and rest instructions. If the mix is still wet, do not add more water. Check drainage and roots, then light, humidity, water quality and pests. Faded color or webbing alone does not show that the roots need water.
Sources3 references
- Royal Botanic Gardens, Kew: Plants of the World OnlineTaxonomy · accepted name · native range · habit · varieties
- Royal Horticultural SocietyLight · compost · moisture · feeding · winter care · pests · hardiness
- North Carolina State University Extension Gardener Plant ToolboxFiltered sun · room temperature · humidity · watering · dry-down · color and low-light symptoms
- How we check our plant advice
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