Updated: June 25, 2023

If you have a horse tail plant (Equisetum hyemale) in your garden or home, you may have noticed that it is growing sideways instead of upright. While this can be frustrating, there are several reasons why this may be happening. In this article, we will explore the possible causes and provide some solutions to help your horse tail plant grow upright once again.

Insufficient Light

One of the most common reasons for a horse tail plant growing sideways is insufficient light. Horse tail plants thrive in bright, indirect light conditions. If your plant is not receiving enough light, it may start to lean towards the direction of the available light source, resulting in a sideways growth pattern.

To remedy this issue, try moving your horse tail plant to a location with better lighting conditions. Ideally, it should be placed near a window where it can receive bright, indirect sunlight for several hours each day. If natural light is limited, you can also supplement with artificial grow lights to provide the necessary light intensity.

Improper Watering

Another factor that can contribute to sideways growth in horse tail plants is improper watering. These plants require consistently moist soil but are susceptible to root rot if overwatered. On the other hand, underwatering can cause the plant to become weak and droopy, leading to sideways growth.

To ensure proper watering, check the moisture level of the soil regularly. Stick your finger about an inch into the soil; if it feels dry at that depth, it’s time to water. When watering, make sure to saturate the soil thoroughly and allow any excess water to drain out of the pot. Avoid leaving the plant sitting in standing water as it can lead to root rot.

Pot Size and Root Bound

Horse tail plants have an extensive root system and can quickly become root bound if grown in a pot that is too small. When the roots become crowded, they can push against the sides of the pot, causing the plant to lean or grow sideways.

If you notice your horse tail plant growing sideways and suspect it may be root bound, it’s time to repot it into a larger container. Choose a pot that is at least 2-3 inches wider in diameter than the current one to allow room for the roots to spread out. Be careful when repotting to avoid damaging the delicate roots.

Pest Infestation

Sometimes, a sideways growth pattern in horse tail plants can be a sign of pest infestation. Common pests that affect these plants include spider mites and scale insects. These pests can weaken the plant and disrupt its growth, causing it to lean or grow in abnormal directions.

Inspect your horse tail plant closely for any signs of pests. Look for webbing, tiny insects, or sticky residue on the leaves. If you spot any pests, treat the plant with an appropriate insecticide or take measures to control the infestation naturally, such as using neem oil or a mixture of water and mild soap.

Lack of Support

Lastly, horse tail plants can also grow sideways if they lack proper support. In their natural habitat, these plants often grow alongside other vegetation that provides support and keeps them upright. When grown indoors or in a garden setting without support, they may start to lean or flop over.

To address this issue, consider providing support for your horse tail plant. You can use stakes or trellises placed near the base of the plant to help it grow upright. As the plant grows taller, gently tie its stems to the support structure using soft plant ties or twine. This will encourage vertical growth and prevent sideways leaning.

In conclusion, if your horse tail plant is growing sideways instead of upright, there are several potential causes to consider. Insufficient light, improper watering, pot size, pest infestation, and lack of support can all contribute to this issue. By identifying the root cause and taking appropriate measures, you can help your horse tail plant regain its upright growth pattern and thrive in its environment. Remember to provide adequate light, water correctly, repot if necessary, address pest infestations promptly, and provide support as needed. With proper care, your horse tail plant will soon be growing tall and proud once again.