Red Powder Puff
Calliandra Haematocephala
Calliandra haematocephala, commonly known as the Red Powder Puff or Blood Red Tassel Flower, is a stunning tropical plant native to South America. Its vibrant red flowers and fern-like foliage make it a popular choice for gardens and landscapes, attracting pollinators and adding a splash of color.
Everything it needs
9 essentials at a glance
Watering
Calliandra haematocephala prefers consistently moist soil but should not be waterlogged.
Water when the top inch of soil feels dry, typically every 1-2 weeks. During the growing season (spring and summer), increase watering frequency, while in fall and winter, reduce it. Signs of over-watering include yellowing leaves and root rot, while under-watering may cause wilting and leaf drop.
Light
This plant thrives in full sun to partial shade, ideally receiving 6-8 hours of direct sunlight daily.
It can tolerate some shade but may not flower as profusely. For optimal growth, place it in a bright location, such as near a south-facing window or outdoors in a sunny garden.
Soil
Calliandra haematocephala prefers well-draining soil with a pH range of 6.0 to 7.0.
A mix of potting soil, sand, and perlite is recommended for good drainage. Ensure the pot has drainage holes to prevent water accumulation, which can lead to root rot.
Humidity
This plant enjoys moderate to high humidity levels, ideally around 50-70%.
To increase humidity, mist the leaves regularly or place a humidifier nearby. Signs of humidity stress include browning leaf tips and leaf drop, indicating the need for more moisture in the air.
Temperature
Calliandra haematocephala thrives in temperatures between 65-85°F (18-29°C).
It is not frost-tolerant and should be protected from temperatures below 50°F (10°C). This plant is suitable for USDA hardiness zones 9-11, making it ideal for warm climates.
Fertilizing
Use a balanced, water-soluble fertilizer with an NPK ratio of 10-10-10 or similar.
Fertilize every 4-6 weeks during the growing season, and reduce to once every 2-3 months in fall and winter. Signs of nutrient deficiency include pale leaves and poor growth, indicating the need for more fertilizer.
Pruning
Prune Calliandra haematocephala in late winter or early spring to encourage bushier growth and remove any dead or damaged branches.
Use sharp, clean pruning shears to make clean cuts. Deadheading spent flowers can also promote further blooming throughout the season.
Repotting
Repot every 1-2 years or when the plant becomes root-bound, indicated by roots growing out of the drainage holes.
Choose a pot 1-2 inches larger in diameter. Carefully remove the plant from its pot, trim any damaged roots, and place it in fresh potting mix. Water thoroughly after repotting to help settle the soil.
Propagation
Propagation can be achieved through stem cuttings or seeds.
For stem cuttings, take a 4-6 inch cutting from a healthy plant, remove the lower leaves, and place it in a pot with moist potting mix. Cover with a plastic bag to maintain humidity until roots develop, which usually takes 4-6 weeks. For seeds, soak them in water for 24 hours before planting in a well-draining mix, keeping them warm and moist until germination.
When it's unhappy
Yellow leaves
Why it happens
Over-watering or nutrient deficiency.
How to fix it
Check soil moisture and reduce watering if necessary. Fertilize if nutrient deficiency is suspected.
Wilting leaves
Why it happens
Under-watering or extreme heat.
How to fix it
Increase watering frequency and ensure the plant is not exposed to excessive heat.
Browning leaf tips
Why it happens
Low humidity or over-fertilization.
How to fix it
Increase humidity levels through misting or a humidifier, and reduce fertilizer application.
Poor flowering
Why it happens
Insufficient light or nutrient deficiency.
How to fix it
Ensure the plant receives adequate sunlight and consider fertilizing to promote blooming.
Root rot
Why it happens
Over-watering and poor drainage.
How to fix it
Allow the soil to dry out between waterings and ensure the pot has proper drainage.
Care through the year
Spring
In spring, increase watering as the plant begins to actively grow. Fertilize every 4-6 weeks to support new growth and blooming.
Summer
During summer, ensure the plant receives full sun and adequate water. Monitor humidity levels, especially in hot weather, to prevent stress.
Fall
In fall, gradually reduce watering as the plant's growth slows. Continue to fertilize until late fall, then reduce frequency.
Winter
In winter, keep the plant in a warm location and reduce watering significantly. Avoid fertilizing during this dormant period.
Toxicity & Safety
Calliandra haematocephala is considered non-toxic to pets and children. However, ingestion of large quantities may cause mild gastrointestinal upset. Always monitor children and pets around plants.
Good to know
Why are my Calliandra haematocephala leaves turning yellow?
Yellow leaves can indicate over-watering or a nutrient deficiency. Check the soil moisture and adjust your watering schedule, and consider fertilizing if needed.
How often should I water my Red Powder Puff?
Water your Calliandra haematocephala when the top inch of soil feels dry, typically every 1-2 weeks, adjusting frequency based on seasonal changes.
What light conditions are best for Calliandra haematocephala?
This plant thrives in full sun to partial shade, ideally receiving 6-8 hours of direct sunlight daily for optimal growth and flowering.
How can I increase humidity for my Blood Red Tassel Flower?
To increase humidity, mist the leaves regularly, use a humidifier, or place the plant on a tray filled with water and pebbles to create a more humid environment.
When is the best time to prune Calliandra haematocephala?
Prune in late winter or early spring to encourage bushier growth and remove any dead or damaged branches before the growing season begins.
How do I propagate Calliandra haematocephala?
You can propagate through stem cuttings or seeds. For cuttings, take a healthy 4-6 inch cutting, place it in moist potting mix, and maintain humidity until roots develop.
What are the signs of root rot in Calliandra haematocephala?
Signs of root rot include yellowing leaves, wilting, and a foul smell from the soil. If suspected, reduce watering and check for root health.
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