Originating from South Africa, Cotyledon Orbiculata, or Pigs’ Ear succulent, is a captivating plant with fleshy, round leaves and striking red edges that resemble a pig's ear, hence the name. This versatile succulent effortlessly integrates into any decor style, adding a touch of exotic charm to your living spaces.
If you enjoy arranging plants, Cotyledon Orbiculata is a fantastic companion. Its exotic and unique foliage, resembling a pig's ear, adds an extra layer of visual interest, making it a delightful addition to succulent and houseplant arrangements. Placing it in a glass container further enhances its beauty, creating a wonderful display that captures the eye.
Beyond its eye-catching appearance, this hardy succulent is incredibly easy-going, making it a perfect fit for most indoor environments. People love it not just for its unique appearance but also because it's super tough and can survive well as a houseplant. It can handle different indoor conditions, making it a top pick for folks who want some green in their homes without a lot of fuss. Perfect for beginners, Cotyledon Orbiculata is forgiving and resilient, making it a great starting point for those new to plant care.
Toxicity
Cotyledon Orbiculata is reported to be toxic to pets, particularly cats and dogs. The plant contains compounds that may cause mild to moderate toxicity if ingested. Common symptoms of toxicity include vomiting, diarrhea, lethargy, and, in some cases, more severe reactions.
If you have pets at home, it's crucial to take preventive measures to keep it out of reach. Consider placing the plant in areas that are inaccessible to your pets and children, and consult with a veterinarian if you suspect that your pet has ingested any part of the Cotyledon Orbiculata.
General Care
Lighting
Cotyledon Orbiculata typically thrives in bright, indirect sunlight. It can tolerate some direct sunlight, especially in the morning or late afternoon, but it's essential to protect it from intense, scorching midday sun, particularly in hot climate areas. When grown as a houseplant, place Cotyledon Orbiculata near a south or west-facing window where it can receive ample sunlight. A sunny windowsill or a well-lit spot in your home is ideal.
A sunny windowsill or a well-lit spot in your home is ideal for Cotyledon Orbiculata.
If grown outdoors, choose a location with partial shade to protect the plant from the harsh afternoon sun. It can also thrive in full sun, but be mindful of extreme heat. Using a grow lamp is recommended to provide adequate light for Cotyledon Orbiculata during the winter months, especially when natural sunlight is limited. Pay attention to how the plant responds to the artificial light. If you notice signs of stretching or discoloration, it might indicate that the light intensity or duration needs adjustment.
Watering
Cotyledon Orbiculata is adapted to arid conditions in its native habitat of South Africa, so like many succulents, it is drought-tolerant and does not need regular watering. The plant's thick, fleshy leaves are designed to minimize water loss through evaporation, helping it survive in dry environments. Only water when the topsoil is dry to the touch. Water thoroughly and let the excess water drain completely after each watering session to prevent root rot. Don’t forget to empty the saucer beneath the pot to avoid water accumulation. Be mindful of temperature conditions. In cooler months, the plant requires less water, so adjust your watering schedule accordingly.
Soil and Fertilizer
Use a well-draining soil mix specifically formulated for succulents or cacti. This type of soil prevents waterlogging, which is crucial for the health of Cotyledon Orbiculata. If you want to mix your soil, consider adding materials like perlite or coarse sand to general potting soil to enhance aeration and drainage. This helps prevent the soil from compacting, allowing the roots to breathe.
Cotyledon orbiculata doesn't require frequent or heavy fertilization. In fact, it's adapted to nutrient-poor soils. Fertilize sparingly to avoid over-fertilization, which can lead to issues. During the growing season (spring and summer), you can apply a balanced, diluted, liquid fertilizer every 4-6 weeks. Stop fertilization in the fall and winter when the plant's growth slows down. Always follow the specific recommendations on the fertilizer product you choose, and monitor the plant for any signs of stress, root burn or nutrient imbalances.
Temperature and Humidity
Cotyledon Orbiculata thrives in warm temperatures and can grow in most indoor environments with a temperature range of 65°F to 75°F. While it prefers warmth, it can tolerate cooler temperatures, especially if kept dry. However, it's important to protect the plant from frost, as freezing temperatures can damage its fleshy leaves. In winter, if temperatures drop significantly, especially outdoors, consider moving potted plants to a more sheltered location or protecting them from frost. Cotyledon Orbiculata can be grown outdoors in USDA hardiness zones 9b to 11b. In these zones, temperature in the winter usually ranges from 25°F to 50°F, if frost period is rare, the plant can be planted directly in the ground and may even thrive as a perennial. If your winter has regular temperature dips in winter, or if you live in regions with colder climates, planting Cotyledon Orbiculata in containers and moving it indoors during the cold days is recommended.
While this plant prefers warmth, it can tolerate cooler temperatures, especially if kept dry.
Cotyledon Orbiculata is adapted to arid conditions and has low humidity tolerance. It can thrive in areas with lower humidity levels. If grown indoors, the typical humidity levels found in most homes are generally well-tolerated by this succulent. Do not place this succulent in humid rooms (like the kitchen or bathroom). You can also open the doors regularly to have good airflow and to prevent stagnant air that would lead to mold and fungal issues.
Potting and Repotting
When potting, select a container that allows for some space for the plant to grow. Cotyledon Orbiculata prefers slightly snug conditions, so choose a pot that accommodates its current size with a little room to spare. To ensure the optimal health of your plant, it's crucial to plant it in a pot that prioritizes drainage, coupled with a well-draining soil. Choosing containers made of porous, breathable materials such as concrete, terracotta, or ceramic further enhances drainage and facilitates airflow around the roots. These materials contribute to a healthier root environment by preventing waterlogging and promoting essential oxygen exchange.
Incorporating soil aeration into your weekly plant care routine is a beneficial practice. Using a small shovel, delicately probe the plant's roots, creating small pockets of air within the soil. This method enhances the overall oxygen level in the soil, facilitating the efficient absorption of water, nutrients, and oxygen by the roots. Following this aeration, thoroughly water the soil, allowing it to drain completely, maintaining an optimal balance for the plant's well-being.
As a succulent, this plant is a slow grower and does not require annual repotting. Repotting every 2 or 3 years is generally sufficient. You should also repot when you observe crowded roots, the soil has become compacted, or if the plant's growth has slowed down despite appropriate care. When repotting, choose a pot that is one size larger than the current one. It's advisable to repot during the growing season.
During the repotting process, exercise caution to avoid breaking leaves or stems. Thoroughly inspect the plant for any signs of root rot or diseases.
Pruning
Pruning is generally not required for succulents, as they are slow-growers. However, you should remove dead or damaged leaves, stems, or flowers to promote new growth. If your succulent becomes leggy, mostly due to inadequate lighting, you can also trim them back to promote a more compact and bushy appearance. It's generally best to prune during the active growing season to allow the plant enough time and energy to recover. Use only clean and sharp pruning tools to minimize damage.
Propagation
As with many succulents, Cotyledon Orbiculata propagation is easy. It can be propagated through leaf cuttings or offsets. 
For leaf cuttings, select healthy, mature leaves, allow the cut ends to dry and form a callus, then plant them in well-draining succulent soil. Water sparingly until roots develop, and once established, transplant the new plants into individual pots or the garden. 
Alternatively, offsetscan be separated from the base of the parent plant, allowed to form a callus, and then planted in soil. Provide these new plants with lots of bright indirect light. Don’t forget to acclimate these baby plants before exposing them to direct sunlight.
Blooming
Cotyledon orbiculata may produce eye-catching blooms typically in late summer. The plant sends up tall stems adorned with clusters of tubular, bell-shaped flowers. These flowers often exhibit shades of orange, coral, or red, adding a burst of color to the succulent's overall appearance. The flowering period is influenced by factors such as environmental conditions, sunlight exposure, and the overall health of the plant. Providing adequate sunlight and maintaining proper care can promote blooming, especially indoors. Once the blooming cycle is complete, spent flowers should be removed to encourage the plant to redirect energy into new growth.
Photo of anniesannuals.com
Common Problems
Monitoring and timely intervention are key to ensuring the overall health and vitality of Cotyledon Orbiculata.
- Overwatering indicated by yellowing or rotting of lower leaves and mushy stems can be prevented and solved by allowing the soil to thoroughly dry between waterings and ensuring well-draining soil.
- Underwatering: Signs of underwatering, such as shriveling, wilting, or drying leaves, call for adjusting the watering frequency based on the top inch of soil dryness.
- Pest issues including aphids, mealybugs, or spider mites, can be solved using insecticidal soap or neem oil, with affected plants isolated and regularly inspected. 
- Root rot: identifiable by brown, mushy roots and a foul smell, requires improved soil drainage and careful watering practices.
- Sunburn, seen as brown or white spots on leaves, can be prevented by gradually acclimating the plant to direct sunlight.
- Cold damage, evident in frostbite or blackened leaves, can be avoided by protecting the plant from frost during colder months.
- Soil-related issues such as poor drainage or excessive wetness, necessitate the use of a well-draining succulent mix or the addition of perlite to enhance aeration.
- Nutrient deficiency reflected in yellowing leaves and poor growth can be addressed by applying a balanced succulent fertilizer sparingly during the growing season, ensuring the soil is not overly rich.