Key Facts
- Tropical to subtropical shrub or small tree with erect flowering spikes.
- Showy bright yellow pea type flowers arranged on upright racemes.
- Native to the tropical Americas and widely cultivated in warm regions.
- Used in traditional medicine for topical fungal skin infections.
- Flowers and growth can occur year round where frost is absent.
- Prefers moist, fertile soils but tolerates a range of soil types.
- Grows best in full sun or strong filtered light.
- Propagated readily by seed and by cuttings or root suckers.
- Frost sensitive and not reliably hardy in cool temperate climates.
Emperor’s Candlesticks is a tropical shrub or small tree grown for upright racemes of bright yellow pea type flowers and dramatic summer display. It suits warm, frost free gardens in full sun and prefers moist fertile soil while tolerating a range of soil types.
Identification
Look for erect flowering spikes of bright yellow pea type flowers that resemble candles on a stick which gives the plant its common name candle bush. Typical mature plants reach about 6 to 15 ft in height with a spread near 4 to 12 ft depending on pruning and site. Alternate names include ringworm tree.
Best uses and where to grow
Plant in warm borders and informal hedges where a bold flowering shrub is wanted and frost is unlikely. It works well near water features or in mixed tropical beds where moisture and sun are available. In cooler climates grow in containers and bring plants indoors or protect them from frost.
Planting and spacing
Set plants at the same depth they grew in the pot and firm soil around the roots. Space plants to match their mature spread which is typically 4 to 12 ft. Choose a site with room to form a multi branched shrub unless you plan regular pruning to keep size down.
Soil and watering
Emperor’s Candlesticks prefers moist fertile well drained soils and tolerates loam to heavier clay when drainage is adequate. Provide regular water during establishment and dry spells to maintain flowering. Avoid prolonged waterlogging because poor drainage can cause root decline and reduced vigor.
Light and temperature
Give full sun or strong filtered light for best flowering as heavy shade reduces bloom. The plant is frost sensitive and grows in ground in USDA zones roughly 10 to 11. In frost free climates it can flower repeatedly and may produce blooms year round.
After flowering care and pruning
Prune to shape and to control spread after the main flowering flush to encourage bushy regrowth. Remove dead wood and thin crossing branches to improve air movement. In warm sites expect resprouting from roots or suckers and prune these back if you want to keep plants contained.
Propagation
Propagate by seed or by semi hardwood cuttings and by removing root suckers. Seed is readily raised and germination may be aided by scarification or hot water treatment. Cuttings taken in warm seasons root reliably in a lightly shaded, humid environment.
Containment and naturalizing risk
Widely cultivated in warm regions and able to spread in frost free climates so check local regulations before planting. Give thought to siting away from native vegetation and to regular removal of seed pods and root suckers if you want to prevent naturalizing.
Frequently asked questions
- How fast does Emperor’s Candlesticks grow?
- It is fast growing in warm fertile sites and often reaches its typical height range of about 6 to 15 ft in favorable conditions depending on soil and moisture.
- Is Emperor’s Candlesticks invasive?
- It can naturalize and spread in frost free regions. Confirm local invasive species lists and avoid planting where spread would threaten native plants.
- Can it tolerate frost?
- Plants are frost sensitive and are generally grown in ground in USDA zones roughly 10 to 11. In cooler areas use containers and provide winter protection or move plants indoors.
- How do I propagate Emperor’s Candlesticks?
- Use seed, semi hardwood cuttings or remove and replant root suckers. Seeds often benefit from scarification or hot water pretreatment before sowing.
- Are the leaves medicinal or safe for pets?
- Leaves are used in traditional medicine for topical fungal conditions but authoritative toxicology sources should be consulted for human and pet safety. Avoid ingestion and check local poison control for guidance.
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