Updated: June 18, 2023

Have you noticed your horsetail plant growing sideways instead of standing tall and upright? It can be frustrating to see your once beautiful plant start to lose its shape and structure. But fear not, there are several reasons why this might be happening, and there are steps you can take to help your horsetail plant regain its vertical growth.

Lack of Sunlight

One of the most common reasons why horsetail plants grow sideways is due to a lack of sunlight. Horsetail plants are native to wetlands and marshy areas, where they receive plenty of direct sunlight. When grown indoors or in areas with limited light, they may not receive enough sun exposure to grow upright.

To remedy this, try moving your horsetail plant to a spot that receives more direct sunlight. Ideally, it should be placed near a window facing south or west, where it can receive at least six hours of sunlight each day. If moving the plant is not an option, consider using artificial grow lights to supplement the natural light.

Improper Watering

Overwatering or underwatering your horsetail plant can also cause it to grow sideways. These plants require consistently moist soil, but not waterlogged conditions. If the soil is too wet, the roots may rot, leading to weak growth and a lack of support for the stems.

On the other hand, if the plant is underwatered, the soil becomes dry and compacted, making it difficult for the roots to absorb water and nutrients properly. This can result in stunted growth and a weaker structure.

To ensure proper watering, check the soil moisture regularly by inserting your finger into the soil up to your knuckle. If it feels dry at that depth, it’s time to water the plant. However, if it feels moist, hold off on watering for a few more days. Additionally, make sure the pot or container has good drainage to prevent water from accumulating at the bottom.

Lack of Nutrients

Horsetail plants require a balanced supply of nutrients to grow strong and upright. A deficiency in essential minerals can lead to weak growth and structural issues. Common nutrient deficiencies that can cause sideways growth include nitrogen, potassium, and calcium.

To address this issue, consider fertilizing your horsetail plant with a balanced liquid fertilizer once every two weeks during the growing season. Choose a fertilizer specifically formulated for indoor plants or one that is high in nitrogen, which promotes healthy leaf growth. Be careful not to over-fertilize, as this can lead to salt buildup in the soil, causing further damage to the plant.

Inadequate Support

Another reason why horsetail plants may grow sideways is inadequate support for their tall stems. Horsetail plants have hollow stems that can become top-heavy as they grow taller. Without proper support, the stems may lean or bend under their own weight.

To prevent sideways growth, provide support for your horsetail plant by using stakes or a trellis. Insert the stakes into the soil near the base of the plant and gently tie the stems to them using soft plant ties or twine. This will help train the plant to grow upwards and maintain its shape.

Pests and Diseases

Lastly, pests and diseases can also cause horsetail plants to grow sideways. Common pests that affect these plants include aphids, spider mites, and scale insects. These pests feed on the plant’s sap, weakening its structure and causing it to lean or droop.

To control pests, regularly inspect your horsetail plant for signs of infestation, such as discolored leaves or sticky residue. If you spot any pests, treat them with an appropriate insecticidal soap or horticultural oil according to the product instructions.

Additionally, be mindful of diseases that can affect horsetail plants, such as root rot or fungal infections. Ensure proper drainage and avoid overwatering to prevent these issues from occurring.

In conclusion, if your horsetail plant is growing sideways, it is most likely due to a lack of sunlight, improper watering, nutrient deficiencies, inadequate support, or pests and diseases. By addressing these factors and taking appropriate actions, you can help your horsetail plant regain its upright growth and maintain its beautiful form. Remember to provide adequate sunlight, water consistently, fertilize regularly, provide support if needed, and monitor for pests and diseases. With proper care and attention, your horsetail plant will thrive and bring beauty to your home or garden.