Impala Lily (Sabi Star) care

Light

Aim for at least 4-6 hours of direct sun on the leaves. Requires high light intensity — at least 6 hours of direct sun daily for prolific flowering. In cultivation, place in the sunniest available position. Indoors, a south-facing window is essential; supplemental grow lighting is beneficial. Insufficient light prevents flowering and produces weak, stretched growth. If your only bright window faces south, that's perfect for impala lily — same window any aroid would fry on.

Watering

Watering impala lily: every 7–10 days in warm growing season; withhold almost entirely during dormancy (autumn–late winter). The number that matters isn't the day of the week — it's how dry the top 2-3 cm of the pot feels. A finger in the soil tells you more than a watering app. After every watering, tip the saucer. Water when the top inch of soil is dry during active spring and summer growth. Allow the soil to dry completely between waterings and never let the pot sit in standing water. Adenium multiflorum has a pronounced fall-winter dormancy of at least 4 months when it is leafless and requires near-zero watering; any moisture during this cool dormant period dramatically increases rot risk.

Soil and pot

Impala Lily grows best in sandy, fast-draining cactus or succulent mix. Plant in a sandy, very well-draining mix such as equal parts potting soil, coarse sand, and perlite. The natural habitat is sandy, rocky, well-drained soils in full sun. A slightly acidic to neutral pH (6.0–7.0) is ideal. Always use pots with drainage holes; terracotta pots help excess moisture evaporate. 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

Impala Lily sits happiest at around 20–50% humidity and 18–35°C (64–95°F). Adapted to the low-humidity savanna woodlands of southern Africa. Tolerates average indoor humidity. High humidity combined with cool temperatures significantly raises the risk of fungal rot during dormancy. Ensure strong air circulation and avoid misting the plant. If you keep the room above 18–35°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 impala lily sparingly. Feed every 2 weeks during the growing season (spring through mid-summer) with a balanced water-soluble fertiliser at half strength. Reduce to monthly in late summer. Do not fertilise at all during the autumn-to-late-winter dormancy period. A low-nitrogen, phosphorus-rich formula is preferred to encourage flowering over vegetative growth. 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 impala lily in the Growli community. Each is annotated with the most common cause so you know where to start.

• Root rot during dormancy — The most common cause of death in cultivation. During the obligatory autumn-winter dormancy, the plant is leafless and any soil moisture leads to rapid caudex rot. Keep the plant completely dry from leaf fall until new growth emerges in late winter. If soft, dark tissue appears on the caudex, cut it out immediately, dust with sulphur, and allow to dry.
• No flowers despite good care — Impala Lily will not flower without a cool, dry dormancy of at least 4 months. If kept warm and watered year-round, dormancy does not occur and flowers are suppressed. Allow the plant to experience cooler temperatures (around 15°C / 59°F at night) and dry conditions from September to April to trigger the prolific winter flower display.
• Overwatering during active growth — A swollen, mushy stem base or yellowing leaves with soggy soil signal overwatering. The caudex stores water and the plant is highly susceptible to chronic waterlogging. Always allow the soil to dry completely between waterings and improve drainage by repotting into a grittier mix with more perlite.

Propagation

Propagate from fresh seed sown at 30°C (86°F) in barely moist, well-draining cactus mix — seeds germinate in approximately 7 days and are treated with fungicide to prevent damping-off. Cuttings of 10–15 cm (4–6 in) tip growth can be taken in spring, allowed to callous for 2–3 days, dipped in rooting hormone, and inserted into dry, gritty mix at 30°C (86°F) with periodic misting; rooting takes 3–5 weeks. Grafting onto A. obesum rootstock gives faster establishment and flowering. Plants do not flower until 4–5 years old from seed. 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

Impala Lily is toxic to pets. All parts of Adenium multiflorum contain cardiac glycosides in the milky latex, and the plant has a well-documented history as a fish poison and arrow poison in southern Africa. The genus Adenium is listed by the ASPCA as toxic to dogs, cats, and horses, with clinical signs including vomiting, diarrhea, anorexia, depression, irregular heartbeat, and death. Though A. multiflorum is not individually named, the toxic principles are consistent across the genus. Wear gloves when handling; keep entirely away from children and pets. 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.

Impala Lily deep-dive guides

Every aspect of impala lily care, each with its own calibrated guide:

• Impala Lily watering schedule
• Impala Lily light requirements
• Best soil mix for impala lily
• Impala Lily fertilizing guide
• When to repot impala lily
• How to propagate impala lily
• Impala Lily growth rate & size
• Impala Lily cold hardiness
• Impala Lily temperature & humidity
• Is impala lily toxic to cats & dogs?
• Is impala lily toxic to cats?
• Is impala lily toxic to dogs?

Featured in these plant shortlists

Impala Lily qualifies for 3 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

• Houseplants toxic to cats & dogs — The common houseplants the ASPCA lists as toxic to cats and dogs — the ones to keep out of reach, each with its symptoms and a safe alternative.
• Best succulents for beginners — The easiest succulents and cacti to keep alive — selected by documented growth habit, each with the light and watering it actually wants.
• Best houseplants for full sun — Houseplants that want direct sun — the species for a hot south or west-facing windowsill where shade-lovers scorch.
• Browse all 29 plant shortlists — pet-safe, low-light, drought-tolerant and more

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Impala Lily is also known as Impala Lily, Sabi Star, Desert Rose, and Mock Azalea.

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