Updated: July 11, 2023

If you have a Rex plant (also known as a Rex begonia) that is growing sideways, it can be quite concerning. After all, plants are supposed to grow upright, right? However, there are various factors that can cause a Rex plant to grow sideways, and understanding these factors can help you address the issue and ensure the healthy growth of your plant.

Lack of Sunlight

One of the most common reasons why a Rex plant may grow sideways is a lack of sunlight. Rex plants thrive in bright, indirect light. When they don’t receive enough light, they tend to stretch towards the nearest light source, resulting in uneven growth and a sideways appearance.

To address this issue, try moving your Rex plant to a brighter location. Place it near a window where it can receive ample indirect sunlight throughout the day. If you notice that certain parts of the plant are growing towards one side, you can rotate the pot regularly to encourage more even growth.

Uneven Watering

Another factor that can cause a Rex plant to grow sideways is uneven watering. Overwatering or underwatering can lead to root rot or dehydration, respectively, both of which can affect the plant’s overall health and growth pattern.

To prevent uneven watering, make sure you water your Rex plant thoroughly but allow the soil to dry out slightly between waterings. It’s important to note that Rex plants prefer slightly moist soil but not overly soggy conditions. Additionally, ensure that your pot has proper drainage holes to prevent water from accumulating at the bottom.

Lack of Nutrients

A lack of nutrients can also contribute to your Rex plant growing sideways. Like all plants, Rex begonias require essential nutrients for healthy growth. If they are not receiving an adequate supply of nutrients, their growth may become stunted or distorted.

To provide your Rex plant with the necessary nutrients, consider using a balanced, water-soluble fertilizer specifically formulated for indoor plants. Follow the instructions on the fertilizer packaging carefully to avoid over-fertilization, which can lead to root burn and other problems. Regularly feeding your Rex plant will help promote upright growth and overall vigor.

Insufficient Pot Size

The size of the pot can also impact the growth pattern of a Rex plant. If the pot is too small, the roots may become cramped and unable to spread properly. This can result in the plant growing sideways as it tries to find more space for its roots.

To address this issue, consider repotting your Rex plant into a larger container. Choose a pot that is one size larger than the current one, providing ample room for the roots to grow and expand. Be sure to use well-draining potting soil during the repotting process to prevent waterlogging and potential root rot.

Lack of Pruning

Pruning plays a crucial role in maintaining the proper shape and growth pattern of a Rex plant. If you neglect regular pruning, your plant may start growing sideways as it becomes too bushy and top-heavy.

To keep your Rex plant in good shape, regularly trim back any leggy or overgrown stems. Focus on removing excess foliage and encourage new growth from the base of the plant. This will help maintain a more compact and upright appearance.

Pests or Diseases

In some cases, a Rex plant may grow sideways due to pest infestation or disease. Certain pests, such as aphids or spider mites, can weaken the plant by feeding on its sap or causing leaf damage. Similarly, diseases like powdery mildew can affect the overall health of the plant.

Regularly inspect your Rex plant for any signs of pests or diseases. If you identify any issues, take appropriate measures to control the infestation or treat the disease promptly. This will help prevent further damage and promote healthier growth.

In conclusion, if your Rex plant is growing sideways, it’s important to identify the underlying cause and take appropriate action. Whether it’s a lack of sunlight, uneven watering, insufficient nutrients, pot size, lack of pruning, or pest and disease problems, addressing these issues will help your Rex plant regain its upright growth pattern and thrive in your indoor garden. Remember to provide the necessary care and attention to ensure the health and vitality of your Rex begonia.