Evergreen Amaryllis (Striped-leaf Amaryllis) care

Light

In the wild evergreen amaryllis 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. Thrives in a bright, warm position with indirect light. A south-facing windowsill or sunroom works well. Can tolerate some direct morning sun. Insufficient light leads to poor flowering and leggy foliage. 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 year-round watering every 7–14 days; slightly reduced in winter but never fully withheld for evergreen amaryllis, 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. Unlike dormancy-requiring hippeastrums, H. striatum can be kept in light growth year-round in warm bright conditions. Water when the top 3–4 cm of compost is dry. Reduce frequency in winter if temperatures are cooler, but never let the compost dry out completely.

Soil and pot

Evergreen Amaryllis grows best in free-draining, loam-based compost with added perlite or coarse grit. Good drainage is critical. Use a pot only slightly larger than the bulb; pot-bound plants flower more freely. Ensure the upper third of the bulb sits above the compost surface. 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

Evergreen Amaryllis sits happiest at around 45–65% humidity and 15–28°C (59–82°F). Comfortable at average indoor humidity. Misting is not required. Keep away from direct heating appliances which can cause leaf-tip browning. If you keep the room above 15–28°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 evergreen amaryllis sparingly. Feed every two weeks during active growth with a balanced liquid fertiliser, switching to a high-potassium formulation once buds emerge. As the plant does not go fully dormant, maintain light feeding (once a month) even in winter at a reduced dose. 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 evergreen amaryllis in the Growli community. Each is annotated with the most common cause so you know where to start.

• Red blotch (Stagonospora curtisii) — Red lesions on leaves and bulb neck. Purchase disease-free stock and use fresh compost at repotting. Remove affected leaves and treat with a copper-based fungicide.
• Infrequent flowering — Occurs when the plant does not experience sufficient temperature variation or bright light to trigger bud initiation. A cooler, brighter winter period (13–15°C) often helps.
• Mealybugs — Cottony masses in leaf axils and at the bulb neck. Treat with isopropyl alcohol on a cotton swab or apply neem oil spray.
• Overwatering and root rot — The most common problem for an evergreen specimen kept in low-light indoor conditions in winter. Reduce watering frequency and improve light.
• Spider mites — Fine stippling and webbing on leaves in dry indoor air. Improve humidity slightly and treat with insecticidal soap or neem oil.

Companion plants

Evergreen Amaryllis pairs well with Clivia miniata, Streptocarpus hybrids, Hoya carnosa, and Oxalis triangularis. These are species with similar light and water needs, so you can group them in the same room or on the same shelf and water as a batch.

Propagation

Remove offset bulblets at repotting time (every 2–3 years) and pot individually. Twin-scaling can increase stock rapidly. Seed is viable and germinates in 3–4 weeks at 20°C; plants reach flowering size in 2–3 years. 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

Evergreen Amaryllis is toxic to pets. Hippeastrum striatum, like all Hippeastrum species, is listed by the ASPCA as toxic to dogs and cats. The alkaloids lycorine and related compounds are present throughout the plant and concentrated in the bulb; ingestion can cause vomiting, diarrhoea, tremors, and lethargy. Keep away from 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.

Evergreen Amaryllis deep-dive guides

Every aspect of evergreen amaryllis care, each with its own calibrated guide:

• Common evergreen amaryllis problems & fixes
• Evergreen Amaryllis watering schedule
• Evergreen Amaryllis light requirements
• Best soil mix for evergreen amaryllis
• Evergreen Amaryllis fertilizing guide
• When to repot evergreen amaryllis
• How to propagate evergreen amaryllis
• How to prune evergreen amaryllis
• What's eating my evergreen amaryllis?
• Evergreen Amaryllis growth rate & size
• Evergreen Amaryllis cold hardiness
• Evergreen Amaryllis temperature & humidity
• Is evergreen amaryllis toxic to cats & dogs?
• Is evergreen amaryllis toxic to cats?
• Is evergreen amaryllis toxic to dogs?
• All 11 Hippeastrum varieties
• Getting evergreen amaryllis to bloom

Featured in these plant shortlists

Evergreen Amaryllis 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 flowering houseplants — Indoor plants grown for their blooms — selected from the flowering species in Growli’s plant-care library.
• 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.
• Browse all 30 plant shortlists — pet-safe, low-light, drought-tolerant and more

Related guides

Evergreen Amaryllis is also known as Striped-leaf Amaryllis, Brazilian Amaryllis, and Scarlet Amaryllis.

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