Zebra plant
Sources last read 13 September 2026.
Difficult One of the harder ones, and one of the reasons the diagnosis tool exists.
Also called saffron spike and Saffron Spike Zebra.
Toxicity is partly unassessed
What the sources say about its care
- Light
- High light 150–1000 fcClemson Extension · read 13 September 2026Full sun, Partial shadeRHS · read 13 September 2026
- Water
- Moist but well-drainedRHS · read 13 September 2026
- Humidity
No source read publishes a humidity figure for any plant on this site. What follows is general guidance for foliage plants.
ASHRAE recommends indoor relative humidity between 30% and 60% 30–60%Penn State Extension · read 13 September 2026- Temperature
How cold this tolerates, not what it prefers. No source read for this site publishes a preferred range for a plant indoors.
H1B — 10–15°C 10–15 °CRHS · read 13 September 2026- Soil
- Loam; pH Acid or Alkaline or NeutralRHS · read 13 September 2026
- Toxic to cats
- Listed as non-toxicASPCA · read 13 September 2026
- Toxic to dogs
- Listed as non-toxicASPCA · read 13 September 2026
- Harmful to people
- No statement of harm to people is published for this plant; that absence is not evidence it is safe.RHS · read 13 September 2026
How it usually goes wrong
- Brown, papery patches on the leaves nearest the glass
The zebra plant shows pale, dry patches only where direct sun reaches, often with a sharp edge between damaged and healthy tissue.
Full sun or partial shade is what its source names, and outdoors that sun comes with moving air that cools the foliage. Behind still glass the same light heats the tissue well above the room, and the exposed patches dry out first.
Telling it apart: Which side. Damage confined to the lit side is light; damage spread evenly is not.
RHSZebra plant brown leaf tips and edges: causes- Leaf tips go crisp and brown
Tips first on a zebra plant, then margins. Affected tissue is papery and slightly curled, and the damage stops rather than advancing once conditions change.
Heated air holds less water than the plant loses into it, so moisture leaves the leaf faster than it arrives. Penn State Extension cites ASHRAE's indoor range of 30% to 60% relative humidity, and winter heating often takes a room below it.
Telling it apart: Whether the soil is dry too. Crisp edges with damp soil point at the air; with dry soil, at the watering.
Penn State ExtensionZebra plant brown leaf tips and edges: causes- Leaves but no flowers
The zebra plant flowered well at first, then less each season, while its leaves stayed healthy and new stems grew longer.
Its source places it in full sun, partial shade. Flowers cost more than leaves, and a plant kept darker than that keeps growing leaves while it builds few buds or none.
Telling it apart: The rest of the plant. A healthy, leafy plant without flowers is short of light or of a season it needs; a plant that is also yellowing has a root or water problem first.
RHSDiagnose no flowers or dropped buds on this Zebra plant- Soft, sagging leaves low on the plant in soil that has not dried
A sour smell from the compost is common on a zebra plant, and the lowest leaves on each stem come away when pulled. The surface may look dry while everything beneath it is not.
A pot that does not dry between waterings keeps the roots in water rather than in damp soil, and the leaves above them yellow for want of what those roots can no longer send up.
Telling it apart: Two inches down with a finger. Above the soil, drowning and thirst look the same; below it they are opposites.
RHSZebra plant drooping or wilting: causes
Not sure which it is? Ask the diagnosis questions for Zebra plant.
Routine care
- Watering
- Water less, but do not stop entirely. Too much water, or very dry conditions, makes the lower leaves brown and fall.NC State Extension · read 13 September 2026Water generously. Feed with a general liquid fertiliser fortnightly (every 2 weeks) during summer and once a month during winter. Water less in winter.RHS · read 13 September 2026
- Feeding
- From then on, feed with a weak fertilizer solution every few weeks.NC State Extension · read 13 September 2026Water generously; in summer feed every 2 weeks with a general liquid fertiliser, and in winter once a month.RHS · read 13 September 2026
- Repotting
- Repot each year into a pot one size bigger so the roots have enough space.NC State Extension · read 13 September 2026
- Propagation
- Stems cut off can be used to start more plants. The plant is regarded as short-lived, but cuttings from pruning root so easily that it is easy to keep it on display in your home.NC State Extension · read 13 September 2026After flowering, cut the main stem back to a strong leaf pair so side shoots form. Once they reach 8-10cm (3-4in), remove them and root them.RHS · read 13 September 2026
- Pruning
- The plant is thought to be short-lived, but stem cuttings taken while pruning root easily, so you can keep it growing in your home.NC State Extension · read 13 September 2026Once flowering ends, shorten main stems to a strong leaf pair to promote side shoots.RHS · read 13 September 2026
- Pests and diseases
- Can be troubled by aphids.NC State Extension · read 13 September 2026Can be troubled by mealybugs, scale insects and aphids. Diseases: usually none.RHS · read 13 September 2026
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About the plant
Aphelandra squarrosa is a plant species in the family Acanthaceae, which is native to Atlantic Forest vegetation of Brazil. This plant is often used as a house plant. This plant is cited in Flora Brasiliensis by Carl Friedrich Philipp von Martius.
From Wikipedia, CC BY-SA 4.0 · read 13 September 2026
- Native range
- Northeast and Southeast BrazilNC State Extension · read 13 September 2026BrazilRHS · read 13 September 2026
- Growth form
- Perennial, Shrub; habit erectNC State Extension · read 13 September 2026Bushy (evergreen)RHS · read 13 September 2026
- Size
- Height 48–72 in; width 48–60 inNC State Extension · read 13 September 2026Height 1-1.5 metres; spread 1-1.5 metres after 5–10 yearsRHS · read 13 September 2026
- Flowering
- Flowers gold/yellowNC State Extension · read 13 September 2026Flowers yellow in summerRHS · read 13 September 2026
- Uses
What sources record people using this plant for. A traditional or medicinal use listed here is a record of use, not advice to eat it or treat anything with it.
HouseplantNC State Extension · read 13 September 2026
Common problems with Zebra plant
More of the Acanthaceae family
Nerve plantDry, curled edges on leaves near a heater
Polka dot plantEdges of the leaves brown while the middle stays sound
- No photograph yetBlack-eyed Susan VineSourced care, difficulty not yet judged
CrossandraSourced care, difficulty not yet judged
Persian ShieldSourced care, difficulty not yet judged
- No photograph yetPurple Waffle PlantSourced care, difficulty not yet judged
Plants with similar care
Sources
- ASPCA · read 13 September 2026
- Clemson Extension · read 13 September 2026
- NC State Extension · read 13 September 2026
- Penn State Extension · read 13 September 2026
- RHS · read 13 September 2026
- Wikipedia · read 13 September 2026
What this does not cover
The figures above are what published sources say, not measurements of the plant in your room. They say nothing about your pot size, your water, the season, or how far from the glass the plant stands, and those decide more than any figure here does.
Humidity has no species figure because no source read for this site publishes one, and the only temperature published for this plant is a cold floor. The simulator fills those gaps with general figures for its kind of plant, marked as general and listed on how we read sources. Where a toxicity row says the plant was not assessed, that is the absence of a finding and not a finding of safety.
If something is already wrong, the diagnosis tool asks about the soil, the window and the watering, which is where the answer usually is.