Powderpuff Tree (Calliandra haematocephala)

Plant Snapshot

Common Name: Powderpuff Tree
Latin Name: Calliandra haematocephala
Hardiness Zones: USDA roughly zones 9 to 11; frost tender below these zones and usually grown as a container or greenhouse plant where colder
Typical Height: About 6–12 ft (183–366 cm) as a mature shrub or small tree in favorable conditions
Typical Spread: About 6–12 ft (183–366 cm) spread when mature unless regularly pruned
Bloom Period: Flowers year round in frost free climates with strong displays in late winter to spring in subtropical areas
Soil Preferences: Prefers well drained fertile soil. Tolerates average garden soils and slightly acidic to neutral pH. Poor drainage leads to root decline and reduced vigor
Light Preferences: Full sun to part shade. Best flowering in full sun with some afternoon shade beneficial in very hot climates
Toxicity: Toxicity is not well documented in major poison control sources. Exercise caution with children and pets and confirm with authoritative toxicology databases before stating safe status
Propagation: By seed and by semi hardwood or softwood cuttings. Cuttings root readily with good hygiene and a well drained propagation mix

Key Facts

Tropical evergreen shrub or small tree valued for showy powderpuff flower clusters
Flowers are composed of many long stamens in shades of red to pink
Attracts hummingbirds and other pollinators
Typically grown as an outdoor specimen in warm climates or in containers where winters are cool
Prefers well drained soil and performs best in full sun to part shade
Propagated by seed and by semi hardwood or softwood cuttings
Frost sensitive and may suffer dieback where freezes are frequent

Powderpuff Tree (Calliandra haematocephala) is a tropical evergreen shrub or small tree prized for rounded clusters of showy stamens that attract hummingbirds and other pollinators. It offers bold ornamental impact in warm gardens and can be grown in containers where winters are cool.

Identification

Calliandra haematocephala has rounded flower heads made of many long stamens in red to pink shades that create a powderpuff effect. Plants form a multi stemmed shrub or small tree typically reaching about 6 to 12 feet tall and spreading similarly depending on climate and pruning.

Where to Grow and Best Uses

Grow outdoors in warm frost free gardens roughly in USDA zones 9 to 11 or as a container specimen where winters are colder. Use as a focal specimen shrub, a pollinator magnet near patios and feeders, or pruned into a small tree form for vertical interest in subtropical landscapes.

Planting and Spacing

Plant after the last hard frosts in cooler areas and any time in frost free climates when roots can establish. Allow about 6 to 12 feet spacing between plants to accommodate the rounded mature habit. Choose a location with good air circulation and well drained soil to avoid root decline.

Light and Soil

Full sun to part shade produces the best flowering with some afternoon shade helpful in the hottest sites. Powderpuff prefers well drained fertile soil and tolerates average garden mixes. Poor drainage or waterlogged soil leads to reduced vigor and increased risk of root problems.

Watering and Winter Care

Keep soil evenly moist while plants establish and reduce frequency as roots mature. Overwatering in heavy soils causes root decline and poor growth. Plants are frost sensitive and may suffer dieback where freezes are frequent, so protect or move container specimens indoors in cold weather.

After Flowering Care and Pruning

Remove dead wood and lightly prune to maintain shape and encourage new growth. Regular pruning controls size and helps keep a rounded habit for small gardens or containers. Rejuvenation pruning can be done after major dieback but allow time for recovery in warm seasons.

Containers and Overwintering

Powderpuff performs well in containers when winters are cool since pots can be moved to frost free shelters. Use a well drained potting mix and a container large enough for root growth. Move plants indoors or into a protected greenhouse before hard freezes and resume outdoor placement after danger of frost has passed.

Propagation

Propagate by seed or by semi hardwood and softwood cuttings. Cuttings are commonly used to retain cultivar traits and root readily in a well drained propagation mix with good hygiene. Check local extension or botanic garden guidance for timing and rooting hormone recommendations in your region.

Pests and Problems

Major issues relate to poor drainage and winter cold. Root decline follows wet, poorly drained conditions and frost leads to dieback in susceptible climates. Monitor for general garden pests and address stress from soil or watering before resorting to chemical controls.

Frequently asked questions

How fast does Powderpuff Tree grow?: Growth rate varies by climate and care. In favorable warm conditions plants commonly reach about 6 to 12 feet tall and spread similarly over several years with regular watering and feeding.
What hardiness zones are suitable?: USDA roughly zones 9 to 11 are appropriate for outdoor, frost free culture. In colder zones grow in containers and provide winter protection.
How much sun does it need?: Full sun to part shade is best. Full sun encourages the most flowers while some afternoon shade helps in very hot sites.
How should I water Powderpuff Tree?: Keep soil evenly moist during establishment and avoid waterlogged conditions. Poor drainage leads to root decline and reduced vigor.
Can I propagate from cuttings?: Yes. Semi hardwood and softwood cuttings root readily in a well drained mix. Seed propagation is also possible but cuttings preserve specific cultivars.