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Why Are My Orchid Leaves Splitting: Guides For Beginners

Orchids are beloved houseplants cherished for their exquisite beauty and elegance, adding a touch of natural wonder to any indoor space. However, orchid owners often encounter a common concern – leaf splitting. This occurrence, where unwanted fissures appear on the leaves, can be distressing for enthusiasts. 

In this guide, we’ll explore the reasons behind leaf splitting and provide practical solutions to preserve the pristine appearance of these enchanting plants. Let’s delve into the world of orchids and learn how to maintain their leaves in optimal condition.

Reasons For Abnormal Orchid Leaves Splitting

Orchid leaves can split due to various factors. It may be a natural occurrence called leaf lobing, which provides more surface area for light absorption and aids in water drainage. 

However, abnormal leaf splitting can result from environmental factors like temperature fluctuations, low humidity, and inadequate air circulation, as well as cultural factors such as improper watering and fertilisation.

Orchid leaves can split due to various factors

Environmental factors

  • Temperature fluctuations: 

Extreme temperature changes can cause stress to orchid leaves, leading to abnormal splitting. Orchids are sensitive to sudden shifts in temperature, and when exposed to drastic fluctuations, their leaves may exhibit signs of distress, including splitting.

  • Humidity levels: 

Orchids thrive in environments with specific humidity levels. Low humidity can cause leaf desiccation and lead to splitting. Maintaining appropriate humidity, ideally around 50-70%, is crucial for the overall health of orchid leaves.

  • Air circulation: 

Proper airflow is essential for preventing excessive moisture accumulation around orchid plants. Stagnant air can create a breeding ground for pests and diseases, and it may contribute to leaf splitting due to increased humidity in the immediate vicinity of the leaves.

Care Improper Factors

  • Over & under watering: 

Overwatering or underwatering orchids can result in leaf stress and splitting. Overwatering leads to waterlogged roots and suffocates the plant, while underwatering causes dehydration and stress on the leaves.

  • Fertilizer issues: 

Incorrect or excessive fertilization can harm orchid leaves. Excess salts from fertilizer build-up can accumulate on the leaves surface, causing damage and wrinkle leaves. This can also increase the risk of leaves splitting.

It’s important for orchid owners to pay close attention to these environmental and cultural factors to maintain healthy, intact leaves on their cherished plants. By providing the right conditions and avoiding common pitfalls, orchid enthusiasts can help their plants thrive and minimize the occurrence of leaf splitting.

How Can I Prevent Leaf Splitting In My Orchid Plant?

To prevent leaf splitting, maintain optimal growing conditions. Provide the right temperature range for your specific orchid species and avoid sudden temperature changes. 

Ensure adequate humidity through humidity trays, misting, or using a humidifier. Promote proper air circulation by using hydro fans and avoiding direct drafts. Water your orchid thoroughly but allow the potting medium to dry slightly between waterings. 

Use a balanced orchid fertilizer at the recommended dilution and follow a fertilization schedule to prevent salt build-up. Let’s jump into the details.

Regulate orchid growing conditions using temperature, humidity, watering, and fertilizer.

Maintaining optimal growing conditions to avoid orchid leaf splitting

  • Providing ideal temperature ranges: 

Different orchid species have specific temperature preferences. For example, Phalaenopsis orchids thrive in temperatures between 65°F to 80°F (18°C to 27°C), while Cymbidium orchids prefer cooler temperatures around 50°F to 70°F (10°C to 21°C). 

Avoiding sudden temperature changes is vital because drastic fluctuations can stress the plants and lead to splitting.

  • Methods for increasing humidity: 

Orchids generally require higher humidity levels than typical indoor environments. Using humidity trays filled with water or placing pebbles and water at the bottom of the tray can help maintain higher humidity levels around the plants. 

Regular misting and using a humidifier in the growing area are also effective measures to enhance humidity and prevent leaf desiccation.

  • Importance of proper air circulation: 

Adequate air movement around orchids prevents stagnant moisture, which can lead to fungal issues and ultimately cause leaves to split. Orchid owners should ensure proper ventilation by using fans or keeping windows slightly open, avoiding direct drafts that may harm the plants.

Watering and fertilizing practices


  • The significance of well-draining potting medium: 

Orchids prefer a loose, well-draining potting mix that allows excess water to flow away from the roots. A mix composed of materials like bark, sphagnum moss, or perlite is suitable for promoting healthy root growth and preventing overwatering, which can cause leaf stress and splitting.

  • Guidance on watering frequency: 

Orchids should be watered thoroughly, ensuring that water penetrates the entire potting medium. However, it’s essential to allow the medium to dry slightly between waterings to prevent root rot and other water-related issues that may contribute to leaves splitting.


  • Using a balanced orchid fertilizer:

Orchids have specific nutritional needs and using a balanced orchid fertilizer with a ratio like 20-20-20 or 30-10-10 can help meet those requirements. Diluting the fertilizer according to the manufacturer’s instructions prevents over-fertilization, which can harm the leaves.

  • Importance of following a fertilization schedule:

Orchids should be fertilized regularly during their active growing season, typically every two to four weeks. Additionally, flushing the pot occasionally with plain water helps prevent salt build-up, which can damage the leaves and contribute to splitting.

Fertilized regularly during their active growing season

Monitoring and maintenance

  • Encouraging frequent plant inspection: 

Regularly inspecting orchids allows owners to detect early signs of stress, disease, or pest infestations that could lead to leaf issues. Promptly addressing such problems can prevent further damage to the leaves and the overall health of the plant.

  • Addressing of issues: 

Timely intervention is crucial in preventing leaves splitting from worsening. Applying appropriate treatments or making necessary adjustments to the growing conditions can help reverse leaf damage and restore the plant’s health.

  • Pruning:

If leaf splitting becomes severe or widespread, pruning the affected portions may be necessary to revive orchid. Proper pruning techniques involve using sterilized tools to avoid introducing pathogens and treating the cuts with fungicide or cinnamon powder to promote healing and prevent infections.


In conclusion, understanding the causes of leaves splitting in orchids and addressing them promptly is crucial for maintaining healthy and pristine foliage. By providing optimal growing conditions, including appropriate temperature, humidity, and air circulation, orchid owners can prevent leaf stress. Proper watering, balanced fertilization, and regular inspection also play vital roles in promoting leaf health.

To ensure that orchids thrive and produce undamaged leaves, attentive care and timely intervention are essential. With proper attention and adherence to these guidelines, orchid enthusiasts can enjoy the beauty and elegance of their plants for years to come.


Kelly Lawrence

Kelly Lawrence

Kelly Lawrence is the CEO of Swipe Garden. Over 10 years in the writing and passion for gardening, she brings a wealth of expertise and creativity to the world of gardening. Kelly Lawrence has cultivated a community of plant lovers, making gardening accessible and enjoyable for all.