Plant care
White Shrimp Plant (Squirrel's Tail) care
Justicia betonica
Also called White Shrimp Plant, Squirrel's Tail, Vásárhelyi's Shrimp Plant.
Watering rhythm
Bright indirect light (just back from a sunny window)
When the top 2–3 cm (1 in) of compost dries out
Light
Bright indirect light (just back from a sunny window)
Soil
Well-drained general-purpose compost
Humidity
50–70%
Temp
13–30 °C
Pet safety
Mildly toxic to pets
Mature size
60–120 cm (2–4 ft) tall in a container
Care at a glance
Light
In the wild white shrimp plant grows on the bright edge of a forest canopy, not in the canopy and not in the open. Indoors, that translates to within a metre of an unobstructed window, sheer curtain optional. Grows best in partial shade to bright, indirect light; it will tolerate some morning sun but direct afternoon sun in summer causes bract scorch. The fastest test: a hand held at the leaf casts a soft-edged shadow at noon — sharp shadow means too much sun, no shadow means too little light.
Watering
Aim for when the top 2–3 cm (1 in) of compost dries out for white shrimp plant, but treat that as a starting point rather than a rule. A south-facing summer windowsill will dry the pot twice as fast as a north-facing winter room. Lift the pot; if it feels noticeably lighter than it did wet, water it. Water regularly during the growing season to keep soil evenly moist; reduce watering in cooler months but never allow the rootball to dry out completely.
Soil and pot
White Shrimp Plant grows best in well-drained general-purpose compost. A free-draining, moderately fertile potting mix amended with perlite or coarse grit prevents waterlogging and root rot, the most common cause of failure. A pot with a working drainage hole is non-negotiable for this species — even free-draining mix will turn soggy in a closed planter. If you love the look of a decorative pot without a hole, use it as a cachepot around an inner nursery pot you can lift out to water.
Humidity and temperature
White Shrimp Plant sits happiest at around 50–70% humidity and 13–30 °C (55–86 °F). Favours a warm, humid environment; mist foliage in dry conditions or group with other tropical plants to raise the ambient humidity. If you keep the room above 13–30 °C year-round and avoid placing the plant near a cold draught, a hot radiator, or an air-conditioning vent, you have already handled the two biggest indoor stressors.
Fertilising
Feed white shrimp plant sparingly. Apply a balanced liquid fertiliser every two to three weeks from spring through early autumn; no feeding in winter. Skip fertiliser entirely on a stressed, recently-repotted, or actively wilting plant — fertiliser salts make damage worse, not better. Wait for a round of healthy new growth before resuming a feeding rhythm.
Common problems
Below are the issues we see most often on white shrimp plant in the Growli community. Each is annotated with the most common cause so you know where to start.
- Overwatering and root rot — The most common cause of decline is overly wet compost; ensure excellent drainage and allow the top layer of soil to dry between waterings, especially in cooler months.
- Whitefly and aphid infestations — Soft new growth attracts whitefly and aphids, particularly under glass; inspect weekly and treat at first sign with insecticidal soap or a yellow sticky trap to monitor populations.
Propagation
Propagate by softwood tip cuttings 8–10 cm (3–4 in) long taken in spring or summer; root in a moist medium at 20–22 °C (68–72 °F) and pot on once rooted, usually within four to six weeks. Propagation is the cheapest, most satisfying way to expand a collection — and it doubles as insurance against losing a mature plant to an accident. Take a backup cutting once the parent is established and healthy.
Toxicity to pets
White Shrimp Plant is mildly toxic to pets. Justicia betonica is not individually listed in the ASPCA Toxic and Non-Toxic Plant Database. While other Justicia species (J. brandegeeana, J. carnea) are considered non-toxic, specific toxicological data for this species is absent; it is classified here as mildly-toxic as a precaution. Consult a veterinarian if ingestion is suspected. If you keep cats, dogs, or curious children in the house, weigh placement carefully — a high shelf or a hanging planter is enough for casual safety. For severe ingestion incidents, call your local vet and the ASPCA Animal Poison Control Center (in the US, 888-426-4435).
Pet-safety status is sourced from the ASPCA Toxic and Non-Toxic Plant List, which catalogues the most-asked-about plants for cats, dogs, and horses.
White Shrimp Plant care — frequently asked questions
What is the common name for Justicia betonica?
Justicia betonica is most commonly called White Shrimp Plant, but it is also known as White Shrimp Plant, Squirrel's Tail, Vásárhelyi's Shrimp Plant. The names refer to the same species, so care instructions for White Shrimp Plant apply identically to anything sold as Squirrel's Tail.
How much light does white shrimp plant need?
White Shrimp Plant grows best in bright indirect light (just back from a sunny window). Grows best in partial shade to bright, indirect light; it will tolerate some morning sun but direct afternoon sun in summer causes bract scorch.
How often should I water white shrimp plant?
Water white shrimp plant when the top 2–3 cm (1 in) of compost dries out. Water regularly during the growing season to keep soil evenly moist; reduce watering in cooler months but never allow the rootball to dry out completely. The finger-test (or lifting the pot to feel its weight) beats a fixed weekly calendar because pot size, light, and season all change how fast the soil dries.
Is white shrimp plant toxic to cats and dogs?
White Shrimp Plant is mildly toxic to pets. Justicia betonica is not individually listed in the ASPCA Toxic and Non-Toxic Plant Database. While other Justicia species (J. brandegeeana, J. carnea) are considered non-toxic, specific toxicological data for this species is absent; it is classified here as mildly-toxic as a precaution. Consult a veterinarian if ingestion is suspected.
What USDA hardiness zone does white shrimp plant grow in?
White Shrimp Plant is rated for USDA zone 9-11 and RHS hardiness H1b. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.
White Shrimp Plant deep-dive guides
Every aspect of white shrimp plant care, each with its own calibrated guide:
- Common white shrimp plant problems & fixes
- White Shrimp Plant watering schedule
- White Shrimp Plant light requirements
- Best soil mix for white shrimp plant
- White Shrimp Plant fertilizing guide
- When to repot white shrimp plant
- How to propagate white shrimp plant
- How to prune white shrimp plant
- What's eating my white shrimp plant?
- White Shrimp Plant growth rate & size
- White Shrimp Plant cold hardiness
- White Shrimp Plant temperature & humidity
- Is white shrimp plant toxic to cats & dogs?
- Is white shrimp plant toxic to cats?
- Is white shrimp plant toxic to dogs?
- All 7 Justicia varieties
Featured in these plant shortlists
White Shrimp Plant qualifies for 3 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:
- Best plants for a north-facing window — Houseplants for a north-facing window: bright, even, indirect light and no scorching direct sun. Each pick verified against its documented light needs.
- Best humidity-loving houseplants — Houseplants that thrive in a bathroom, kitchen, or by a humidifier — selected by documented humidity preference.
- Best fast-growing houseplants — Houseplants documented as fast or vigorous growers — quick to fill a pot, cover a pole or trail down a shelf.
- Browse all 29 plant shortlists — pet-safe, low-light, drought-tolerant and more
Related guides
White Shrimp Plant is also known as White Shrimp Plant, Squirrel's Tail, and Vásárhelyi's Shrimp Plant.