Cat's Claw
Uncaria Tomentosa
Cat's Claw (Uncaria tomentosa) is a tropical vine known for its medicinal properties and unique claw-like thorns. Native to the Amazon rainforest, it is cherished for its potential health benefits and ornamental appeal, making it a popular choice among gardeners.
Everything it needs
9 essentials at a glance
Watering
Cat's Claw prefers consistently moist soil but can tolerate short periods of drought.
Water when the top inch of soil feels dry, typically every 1-2 weeks, depending on the season. In the growing season (spring and summer), increase watering frequency, while in the dormant season (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
Cat's Claw thrives in partial shade to full sun.
Ideally, it should receive 4-6 hours of direct sunlight daily. Too much direct sunlight can scorch the leaves, while too little light can hinder growth. A location with morning sun and afternoon shade is optimal.
Soil
This plant prefers well-draining soil with a pH range of 6.0 to 7.0.
A mix of potting soil, perlite, and compost works well to ensure good drainage and nutrient availability. Avoid heavy clay soils that retain too much moisture.
Humidity
Cat's Claw enjoys moderate humidity levels around 40-60%.
To increase humidity, consider misting the leaves or placing a humidity tray filled with water and pebbles beneath the pot. Signs of low humidity include brown leaf tips and curling leaves.
Temperature
The ideal temperature range for Cat's Claw is between 65°F to 85°F (18°C to 29°C).
It is hardy in USDA zones 10-11. While it can tolerate brief periods of cooler temperatures, prolonged exposure to temperatures below 50°F (10°C) can damage the plant.
Fertilizing
Use a balanced, water-soluble fertilizer with an NPK ratio of 10-10-10 during the growing season.
Fertilize every 4-6 weeks from spring to early fall. Signs of nutrient deficiency include yellowing leaves and stunted growth.
Pruning
Prune Cat's Claw in early spring to encourage bushy growth and remove any dead or damaged branches.
Use clean, sharp pruning shears to make clean cuts. Deadheading spent flowers can promote further blooming.
Repotting
Repot Cat's Claw every 2-3 years or when it 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, loosen the roots, and place it in fresh potting mix, ensuring the root ball is at the same depth as before.
Propagation
Cat's Claw can be propagated through stem cuttings or seeds.
For stem cuttings, take a 4-6 inch cutting from a healthy plant, remove lower leaves, and place it in moist potting mix. Keep the soil moist and in a warm location until roots develop, usually within 4-6 weeks. For seeds, soak them in water for 24 hours before planting in well-draining soil, keeping them moist until germination.
When it's unhappy
Yellow leaves
Why it happens
Over-watering or nutrient deficiency.
How to fix it
Check soil moisture levels and adjust watering frequency. 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.
Brown leaf tips
Why it happens
Low humidity levels.
How to fix it
Increase humidity by misting the plant or using a humidity tray.
Root rot
Why it happens
Poor drainage or over-watering.
How to fix it
Ensure proper drainage and reduce watering frequency. If root rot is present, repot the plant with fresh soil.
Pest infestations (e.g., aphids, spider mites)
Why it happens
Weak plant health or dry conditions.
How to fix it
Regularly inspect the plant and treat infestations with insecticidal soap or neem oil.
Care through the year
Spring
In spring, increase watering and begin fertilizing every 4-6 weeks. Prune any dead or damaged branches to encourage new growth.
Summer
During summer, ensure the plant receives enough water, especially in hot weather. Monitor for pests and maintain humidity levels.
Fall
In fall, gradually reduce watering as the plant enters dormancy. Continue to monitor for pests and prepare for cooler temperatures.
Winter
In winter, reduce watering further and keep the plant in a warm location. Avoid exposing it to temperatures below 50°F (10°C).
Toxicity & Safety
Cat's Claw is generally considered non-toxic to pets and humans. However, excessive consumption can lead to digestive upset. Always consult a healthcare provider before using it for medicinal purposes.
Good to know
How often should I water my Cat's Claw?
Water your Cat's Claw when the top inch of soil feels dry, typically every 1-2 weeks. Adjust frequency based on seasonal changes.
What light conditions does Cat's Claw prefer?
Cat's Claw thrives in partial shade to full sun, ideally receiving 4-6 hours of direct sunlight daily for optimal growth.
Can I grow Cat's Claw indoors?
Yes, Cat's Claw can be grown indoors as long as it receives adequate light and humidity. A south-facing window is ideal.
What type of soil is best for Cat's Claw?
Cat's Claw prefers well-draining soil with a pH of 6.0 to 7.0. A mix of potting soil, perlite, and compost works well.
How do I propagate Cat's Claw?
You can propagate Cat's Claw through stem cuttings or seeds. For cuttings, take a 4-6 inch cutting and place it in moist potting mix.
What are the signs of nutrient deficiency in Cat's Claw?
Signs of nutrient deficiency include yellowing leaves and stunted growth. Regular fertilization can help prevent this.
Is Cat's Claw toxic to pets?
Cat's Claw is generally non-toxic to pets and humans, but excessive consumption can lead to digestive upset.
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