© KENPEI / CC BY-SA 3.0Night-scented Lily / Giant Upright Elephant Ear
Alocasia odora, known in Japan as "kuwazu-imo," is one of the most widely grown Alocasia varieties in the country, prized for its bold, upright form with large oval leaves rising on thick stalks. In its natural habitat it can reach 1 to 2 meters in height, with leaf stalks growing 60 to 120 cm long, making it a striking statement plant indoors. A distinguishing feature is its thick, rod-like rhizome that creeps along the soil surface — a key way to tell it apart from the similar-looking taro plant. As a perennial, it grows steadily over time, and following basic care guidelines makes it manageable even for beginners. Note that all parts of the plant are toxic, so it should be kept strictly as an ornamental and never ingested.
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Apply as a growerNight-scented Lily / Giant Upright Elephant Ear key facts
- Growing Difficulty
- Beginner-friendly
- Lifespan
- Perennial
- Size
- 1-2 m tall in the wild; petioles 60-120 cm
- Temperature
- 20〜25℃
- Watering
- Slow-release or liquid fertiliser in the growing season
- Light & Placement
- Prefers bright shade to part shade. Indoors, a spot behind a sheer curtain is ideal; strong midsummer sun scorches the leaves.
- Watering
- Water well when the surface dries during the growing season. Cut back in winter and keep on the dry side.
- Temperature & Overwintering
- Alocasias grow best at around 20-25°C by day. Bring indoors in winter and keep away from frost and cold drafts.
- Soil & Repotting
- Use a free-draining, slightly acidic mix with organic matter. Repot in spring to early summer when the rhizome fills the pot.
- Propagation
- Divide offsets or cut the rhizome into sections. Wear gloves to avoid contact with the sap.
- Pests & Cautions
- Prone to spider mites; overwatering causes rot and leaf spots. The whole plant contains calcium oxalate and the sap can irritate skin. Never mistake it for edible taro, and keep it away from pets and children.
About Night-scented Lily / Giant Upright Elephant Ear
Kuwazu-imo (Alocasia odora) is a popular Japanese houseplant with bold oval leaves on thick stalks. This easy-care perennial makes a striking statement plant indoors — ornamental only, as all parts are toxic.
7 things to know before growing Night-scented Lily / Giant Upright Elephant Ear
1Prefers Bright Shade
Kuwazu-imo prefers bright, indirect light and does best out of direct sun. Indoors, a spot near a window with sheer curtains that filter the light works well. Prolonged direct sunlight can scorch the leaves, so keep that in mind.
2Balance Watering Carefully
During the growing season, water thoroughly once the soil surface has dried, avoiding cycles of extreme wetness and dryness. Never let water sit in the saucer, as this can lead to root rot — empty it regularly. In winter, growth slows, so reduce watering frequency accordingly.
3Well-Draining Soil
Because this plant dislikes staying wet, choose a well-draining, well-aerated potting mix. Mixing pumice or perlite into a standard houseplant potting soil helps prevent root rot.
4Repot When Rootbound
Kuwazu-imo grows vigorously and can quickly become rootbound. If roots start showing at the bottom of the pot or growth slows down, it's time to move up to a slightly larger pot. Repotting during the growing season puts the least stress on the plant.
5Protect From Winter Cold
This plant is sensitive to cold, so keep it in a warm indoor spot once temperatures drop. Exposure to low temperatures can damage the leaves or halt growth, so watch out for chilly drafts near windows in winter.
6Check Leaves and Rhizome
When choosing a plant, look for firm leaves with little discoloration or damage. A sturdy, rod-like rhizome creeping along the soil surface is also a good sign of a healthy specimen.
7Toxic — Handle With Care
All parts of kuwazu-imo are toxic and not edible. The sap can irritate skin or mucous membranes, so wear gloves when pruning or repotting, and keep the plant out of reach of small children and pets.
Frequently asked questions about Night-scented Lily / Giant Upright Elephant Ear
- Q.Can it be grown indoors?
- A.Yes, kuwazu-imo grows well indoors as long as it gets bright, indirect light. Placing it near a window with sheer curtains to filter direct sun works well.
- Q.Is it edible?
- A.No, all parts of kuwazu-imo are toxic and it cannot be eaten. It should be enjoyed purely as an ornamental plant, with care taken to keep it away from anyone's mouth.
- Q.How large does it grow?
- A.In its natural habitat, it can reach a height of 1 to 2 meters, with leaf stalks growing 60 to 120 cm long. Indoors, its growth pace will vary depending on pot size and growing conditions.
- Q.How is it different from taro?
- A.The two plants look quite similar, but kuwazu-imo is distinguished by its thick, rod-like rhizome that creeps along the soil surface. This rhizome shape is the key way to tell it apart from taro.
- Q.Is it difficult to grow?
- A.Kuwazu-imo is a perennial considered suitable for beginners, and it's easy to manage once you understand the basics of placement and watering. It grows steadily, so enjoy watching its progress over time.
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