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Bird of Paradise (Strelitzia reginae)

Bird of Paradise

Strelitzia reginae · Strelitziaceae

Moderate Toxic to pets

Strelitzia reginae is a clump-forming, evergreen perennial native to the Eastern Cape and KwaZulu-Natal provinces of South Africa, where it grows in coastal scrub and along riverbanks. It is widely grown as a houseplant and garden specimen in frost-free climates for its spectacular orange and blue flowers, which resemble a tropical bird in flight. Indoors it is prized as a bold, architectural foliage plant that can bloom when given sufficient light and maturity.

☀ Light
Bright direct or very bright indirect light
💧 Water
Allow top third of compost to dry between waterings
🌡 Temp
10 to 27 C
💦 Humidity
Moderate; tolerates average household levels
🌿 Soil
Well-draining, loam-based or gritty mix
🍽 Feeding
Monthly during spring and summer with balanced liquid fertiliser

Photo: Diego Delso / CC BY-SA 3.0 via Wikimedia Commons

How to care for Bird of Paradise

Light

Strelitzia reginae requires the brightest possible position indoors. A south or west-facing windowsill that receives several hours of direct sun each day is ideal. Without adequate light the plant will produce healthy foliage but is very unlikely to flower. In low-light rooms it deteriorates slowly over time, so supplemental grow lighting is worth considering if natural light is limited.

Watering

Water thoroughly when the top third of the compost has dried out, allowing excess water to drain freely from the pot. Reduce watering in autumn and winter when growth slows, but never allow the rootball to dry out completely for prolonged periods as this will cause leaf curl and browning. Overwatering is one of the most common causes of decline and can lead to root rot, so always err on the side of underwatering rather than keeping the compost consistently wet.

Soil and potting

Use a well-draining, loam-based compost such as John Innes No. 2 or 3, combined with roughly 25 per cent perlite or coarse grit to improve drainage and aeration. Strelitzia develops a fleshy, water-storing root system that is highly susceptible to rot in poorly drained media. Avoid peat-heavy or water-retentive mixes.

Feeding

Apply a balanced liquid fertiliser at half to full label strength once a month throughout the active growing season from March to September. A formula with a slightly higher potassium content can be beneficial once flower spikes begin to develop. Do not feed in autumn or winter, as surplus nutrients in the compost during dormancy can cause salt build-up and root damage.

Humidity and temperature

Strelitzia reginae tolerates the relatively low humidity found in most heated homes, though it appreciates humidity above 40 per cent if possible. Avoid positioning the plant near radiators or heat vents, which create excessively dry conditions and can cause leaf edge browning. It prefers temperatures of 18 to 24 C in summer and can tolerate a cool winter rest period down to around 10 C, which may actually help trigger flowering.

Repotting

Repot every two to three years in spring, moving up only one pot size at a time. Strelitzia flowers most reliably when slightly pot-bound, so there is no benefit in choosing a pot much larger than the current rootball. Terracotta pots are preferable as they allow moisture to evaporate through the walls, reducing the risk of waterlogging. Take care when repotting as the thick roots are brittle and break easily.

Pruning

Remove dead, damaged or yellowing leaves at the base with a clean, sharp blade. Once a flower spike has fully finished, cut it down to its base. Avoid removing healthy green leaves unnecessarily, as the plant is slow to produce new growth and each leaf contributes significantly to photosynthesis. Wipe large leaves occasionally with a damp cloth to remove dust and improve light absorption.

Is Bird of Paradise toxic?

Pets: Mildly toxic. The ASPCA lists Strelitzia reginae as toxic to dogs and cats. Ingestion of the flowers or seeds can cause mild gastrointestinal signs including nausea, vomiting and drowsiness. The seeds are considered the most toxic part due to the presence of toxic alkaloids.
People: The plant is considered mildly toxic to humans if ingested. The seeds in particular can cause nausea, vomiting and drowsiness. Keep away from young children who may be tempted by the colourful flowers or seeds.

Common problems

Brown leaf tips and edges
Likely cause: Low humidity, underwatering, fluoride sensitivity or draughts  Fix: Move away from heat sources and cold draughts, increase watering frequency slightly, and consider using rainwater or filtered water if tap water is heavily fluoridated.
Yellowing lower leaves
Likely cause: Overwatering or waterlogged compost leading to root stress  Fix: Allow the compost to dry out more fully between waterings. Check that drainage holes are clear and consider repotting into a freely draining mix if root rot is suspected.
Failure to flower
Likely cause: Insufficient light, the plant being too young, or too frequent repotting  Fix: Move to the brightest available position with direct sun. Bear in mind that plants grown from seed can take five or more years to first flower, and that root disturbance can delay blooming. A cool winter rest can help promote bud formation.
Scale insects on stems and leaf undersides
Likely cause: Infestation by soft or hard scale insects, often introduced on new plants  Fix: Remove visible scale by hand with a cotton bud dipped in rubbing alcohol, then treat the whole plant with neem oil spray or an insecticidal soap solution. Repeat weekly until resolved.
Pale, washed-out leaves with fine webbing
Likely cause: Red spider mite infestation, typically encouraged by hot, dry conditions  Fix: Increase humidity around the plant and wipe leaves with a damp cloth. Apply insecticidal soap or neem oil, ensuring thorough coverage of leaf undersides. Repeat at five to seven day intervals for at least three cycles.
Soft, dark, mushy stem base or roots
Likely cause: Root or crown rot caused by sustained overwatering or poor drainage  Fix: Remove the plant from its pot, trim away all affected roots with sterile scissors, and allow the cut surfaces to dry for a few hours. Repot into fresh, well-draining compost and do not water for several days.

How to propagate

Division

In spring, carefully remove the plant from its pot and use a clean, sharp knife to separate rooted offsets or suckers from the main clump, ensuring each division has several roots attached. Pot each division individually into appropriately sized pots and keep warm and lightly shaded for several weeks until established.

Seed

Sow fresh seed after soaking it in warm water for 24 to 48 hours to soften the hard coat. Sow at a depth of 1 cm in a gritty seed compost, maintain a temperature of 21 to 25 C, and expect germination in one to six months. Plants grown from seed typically take five to ten years to flower.

Where Bird of Paradise comes from

Native to Cape Provinces, KwaZulu-Natal. Now naturalised or cultivated in 8 other regions worldwide.

Story and origins

The genus name Strelitzia was given by Sir Joseph Banks in 1788 in honour of Queen Charlotte of Mecklenburg-Strelitz, the German-born wife of King George III of Great Britain, who was an enthusiastic patron of the Royal Botanic Gardens at Kew. The species epithet reginae is the Latin genitive form of the word for queen, meaning 'of the queen', reinforcing the royal dedication. The common name 'Bird of Paradise' refers to the striking resemblance the flower bears to the head and plumage of a tropical bird, an impression created by the vivid orange sepals and bright blue petals emerging from a boat-shaped spathe.

Strelitzia reginae was first collected by Francis Masson, a Scottish botanist who was sent to the Cape of Good Hope by Kew Gardens in 1772. The specimen he collected was grown at Kew and formally described and illustrated in 1788, quickly becoming a prized ornamental in European glasshouses. The plant became deeply associated with South African national identity and features prominently in the country's horticultural heritage, with the Kirstenbosch National Botanical Garden in Cape Town maintaining notable collections. In the twentieth century, the cut flower industry, particularly in the Netherlands and parts of the United States, adopted Strelitzia reginae as a commercially important crop due to its extraordinarily long vase life, which can exceed two to three weeks with proper conditioning.

Varieties to know

Strelitzia reginae 'Mandela's Gold'

A notable yellow-flowered cultivar with golden-yellow petals in place of the typical orange, named in honour of Nelson Mandela.

Strelitzia reginae 'Kirstenbosch Gold'

Another yellow-flowered selection, developed at the Kirstenbosch National Botanical Garden in Cape Town.

Strelitzia reginae 'Dwarf'

A compact cultivar growing to roughly half the height of the species, better suited to smaller indoor spaces while retaining the characteristic flowers.

Fun facts

Bird of Paradise FAQ

Why is my Bird of Paradise not flowering?
The most common reasons are insufficient light, the plant being too young, or too much root disturbance from regular repotting. Ensure the plant receives several hours of direct sun daily. Plants grown from offsets typically flower within two to three years while those from seed may take five to ten years. Allowing the plant to become slightly pot-bound and giving it a cooler winter rest period of around 10 to 15 C can also help stimulate flowering.
How often should I water my Bird of Paradise indoors?
Water when the top third of the compost has dried out, which is typically every one to two weeks in summer and every two to four weeks in winter depending on your conditions. Always water thoroughly, allowing excess to drain away, and never leave the pot sitting in standing water. The fleshy roots store moisture, so the plant copes better with brief underwatering than with sustained overwatering.
Can a Bird of Paradise survive in a room with low light?
It can survive in moderate indirect light for a time but it will not thrive or flower without bright light, preferably including some direct sun each day. In genuinely low-light conditions the plant will weaken progressively. If a bright windowsill is unavailable, a dedicated grow light placed close to the plant for twelve to fourteen hours a day can compensate adequately.
Is the Bird of Paradise safe to have around pets?
No. The ASPCA classifies Strelitzia reginae as toxic to both dogs and cats. Ingestion can cause mild gastrointestinal upset, nausea, vomiting and drowsiness, with the seeds being the most harmful part. It is advisable to keep the plant out of reach of pets and to contact a vet promptly if ingestion is suspected.
How large will a Bird of Paradise grow indoors?
Strelitzia reginae typically reaches 1 to 1.5 metres in height indoors, although growth is slow. The leaves are large, leathery and paddle-shaped, and mature plants develop into substantial clumps. Compact or dwarf cultivars are available if space is limited. Outdoors in frost-free climates plants can exceed 2 metres.
When and how should I repot my Bird of Paradise?
Repot in spring only when the roots are visibly congested or emerging from the drainage holes, typically every two to three years. Move up just one pot size as the plant actually flowers better when slightly pot-bound. Use a well-draining compost and handle the brittle fleshy roots carefully during the process to avoid unnecessary damage.
Why are the edges of my Bird of Paradise leaves turning brown?
Brown leaf edges are most commonly caused by low humidity, draughts from windows or air conditioning, or sensitivity to the fluoride and chlorine in tap water. Try moving the plant away from draughts, misting occasionally or placing it on a humidity tray, and switching to rainwater or water that has been left to stand overnight. In some cases underwatering or very dry potting compost can also produce this symptom.