Haworthia cymbiformis
Haworthia cymbiformis
Haworthia cymbiformis, commonly known as the 'Window Plant', is a charming succulent native to South Africa. Its unique leaf structure allows it to thrive in low-light conditions, making it a popular choice for indoor gardening enthusiasts.
Everything it needs
9 essentials at a glance
Watering
Haworthia cymbiformis prefers to dry out between waterings.
Water thoroughly when the top 1-2 inches of soil are dry, typically every 2-3 weeks in the growing season (spring and summer) and less frequently in fall and winter. Signs of over-watering include mushy leaves and root rot, while under-watering may cause leaves to wrinkle and become shriveled.
Light
This plant thrives in bright, indirect light but can tolerate some direct sunlight.
Ideally, it should receive 6-8 hours of light daily. Too much direct sunlight can scorch its leaves, while too little light may cause it to become leggy.
Soil
Haworthia cymbiformis prefers a well-draining soil mix, ideally a cactus or succulent mix with added perlite or sand for aeration.
The pH should be slightly acidic to neutral, around 6.0 to 7.0. Good drainage is essential to prevent root rot.
Humidity
This succulent prefers low humidity levels, around 30-50%.
To increase humidity, you can place a humidity tray nearby or mist the plant lightly, but avoid excessive moisture. Signs of humidity stress include browning leaf tips and shriveling.
Temperature
Ideal temperatures range from 65-80°F (18-27°C) during the day and can drop to 50-60°F (10-15°C) at night.
It is hardy in zones 10-11 and can tolerate brief periods of cold down to 30°F (-1°C), but prolonged exposure to freezing temperatures should be avoided.
Fertilizing
Use a balanced, diluted liquid fertilizer with an NPK ratio of 10-10-10 or a cactus-specific fertilizer during the growing season.
Fertilize once a month from spring to early fall, and avoid fertilizing in winter. Signs of nutrient deficiency include yellowing leaves and stunted growth.
Pruning
Pruning is minimal for Haworthia cymbiformis.
Remove dead or damaged leaves as needed using clean, sharp scissors. Deadheading is not necessary, but you can trim any offsets to maintain shape and encourage growth.
Repotting
Repotting should be done every 2-3 years or when the plant outgrows its pot.
Choose a pot that is 1-2 inches larger in diameter. Signs it needs repotting include roots growing out of the drainage holes or soil that dries out too quickly. Carefully remove the plant from its pot, shake off excess soil, and place it in the new pot with fresh soil.
Propagation
Haworthia cymbiformis can be propagated through offsets or leaf cuttings.
For offsets, gently separate the pups from the main plant and allow them to dry for a day before planting in a well-draining mix. For leaf cuttings, cut a healthy leaf, let it callous for a few days, then plant it in soil. Best timing is during the spring.
When it's unhappy
Yellow leaves
Why it happens
Over-watering or poor drainage.
How to fix it
Allow the soil to dry out completely before watering again, and ensure the pot has adequate drainage.
Shriveled leaves
Why it happens
Under-watering or low humidity.
How to fix it
Increase watering frequency and ensure the plant is in a suitable humidity range.
Leggy growth
Why it happens
Insufficient light.
How to fix it
Move the plant to a brighter location with indirect sunlight to encourage compact growth.
Brown leaf tips
Why it happens
Low humidity or too much direct sunlight.
How to fix it
Increase humidity levels and provide filtered light to prevent leaf scorching.
Root rot
Why it happens
Over-watering and poor drainage.
How to fix it
Repot the plant in fresh, dry soil and reduce watering frequency.
Care through the year
Spring
In spring, resume regular watering and fertilizing as the plant enters its active growth phase. Monitor for new growth and adjust light exposure as needed.
Summer
During summer, ensure the plant receives bright, indirect light and water every 2-3 weeks. Be cautious of direct sunlight, which can scorch the leaves.
Fall
In fall, gradually reduce watering as the plant prepares for dormancy. Continue to provide bright light but be mindful of cooler temperatures.
Winter
In winter, water sparingly, allowing the soil to dry out completely between waterings. Keep the plant in a warm location with indirect light.
Toxicity & Safety
Haworthia cymbiformis is non-toxic to pets and children. It is safe to have around cats and dogs, with no known harmful effects from ingestion.
Good to know
How often should I water my Haworthia cymbiformis?
Water your Haworthia cymbiformis every 2-3 weeks, allowing the top 1-2 inches of soil to dry out completely between waterings.
Why are my Haworthia cymbiformis leaves turning yellow?
Yellow leaves are often a sign of over-watering or poor drainage. Ensure that the pot has drainage holes and allow the soil to dry out before watering again.
What type of soil is best for Haworthia cymbiformis?
A well-draining cactus or succulent mix is ideal for Haworthia cymbiformis. You can also add perlite or sand to improve drainage.
Can I propagate my Haworthia cymbiformis from leaves?
Yes, you can propagate Haworthia cymbiformis from leaf cuttings. Allow the cut end to callous for a few days before planting it in well-draining soil.
What temperature is best for my Haworthia cymbiformis?
Haworthia cymbiformis thrives in temperatures between 65-80°F (18-27°C) during the day and can tolerate cooler temperatures at night.
Is Haworthia cymbiformis toxic to pets?
No, Haworthia cymbiformis is non-toxic to both pets and children, making it a safe choice for households with animals.
How can I tell if my Haworthia cymbiformis needs repotting?
If you notice roots growing out of the drainage holes or if the soil dries out too quickly, it may be time to repot your Haworthia cymbiformis.
Grows well with
Track this plant in your garden.
Set care reminders, log growth, and join a community of plant lovers.