Why is My Arrowhead Plant Turning Yellow: Common Causes & Solutions

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An Arrowhead plant is a popular choice for indoor gardening because of its beautiful and diverse leaf shapes and colors. However, it’s not uncommon for the leaves to turn yellow, leaving a plant owner wondering what they could be doing wrong. There are a few reasons behind this phenomenon, and understanding them can make a significant difference in the health of your Arrowhead plant.

Overwatering is one of the most common culprits when it comes to yellowing leaves in an Arrowhead plant. Too much water can lead to an excess of moisture in the soil, causing the leaves to become yellow and wilt. To avoid this issue, make sure to water your plant only when 50% of the soil volume is dry.

While overwatering can be a significant problem, underwatering can be just as harmful, leading to yellow, dry, and crispy leaves. Consistent underwatering makes the plant lose its vibrancy and appear lifeless, so it’s essential to check your plant’s water needs regularly. By identifying the causes and making appropriate adjustments to your plant care routine, you can quickly restore the health of your Arrowhead plant and prevent yellowing leaves in the future.

Causes of Yellowing

When caring for arrowhead plants, it’s essential to understand the factors causing yellow leaves. In this section, we’ll discuss the various contributing factors, like Overwatering, Underwatering, Lighting Conditions, and Nutrient Deficiency.


Overwatering is a prevalent issue contributing to yellow leaves in arrowhead plants. Excessive water can lead to waterlogged roots, which prevents them from absorbing oxygen properly. Consequently, the leaves turn yellow and may eventually die. To avoid overwatering, maintain a consistent watering schedule by ensuring that only 50% of the soil volume is dry before the next watering. Arrowhead plants typically prefer moist—but not soggy—soil, so monitor the soil moisture carefully.


Underwatering is another potential cause of yellowing leaves in arrowhead plants. These plants need consistent moisture and may develop yellow leaves if they receive insufficient water. Water your arrowhead plant when you notice the leaves beginning to wilt slightly. In general, it’s essential to establish a balanced watering routine to avoid underwatering or overwatering.

Lighting Conditions

Lighting conditions can significantly impact the health of your arrowhead plant. Insufficient light can cause yellow leaves, as plants need sufficient light to perform photosynthesis. This process produces the energy needed for plant growth. Ideally, arrowhead plants should receive bright, indirect light. Direct sunlight may lead to scorched leaves, while too little light can cause poor growth and yellowing leaves.

Nutrient Deficiency

A lack of nutrients may also result in yellowing leaves for your arrowhead plant. Nutrient deficiencies often occur if the potting soil hasn’t been changed in over a year or if the plant hasn’t received fertilizer during its growth months. To combat nutrient deficiencies, consider repotting the plant in fresh soil or using a balanced fertilizer during the growing season. This will replenish essential nutrients, supporting the overall health and growth of your arrowhead plant.

By addressing the issues discussed above, you can ensure the well-being of your arrowhead plant and prevent further yellowing of its leaves.

Prevention and Solutions

Proper Watering Techniques

One of the primary reasons for arrowhead plant leaves turning yellow is overwatering. To prevent this, ensure you water the plant only when the topsoil is dry. Typically, watering once or twice a week should suffice. You can also consider using an automatic drip irrigation kit to maintain consistent moisture levels.

When watering, make sure to let excess water drain out as arrowhead plants do not like standing water. A well-draining soil mix, combined with a pot with drainage holes, will aid in preventing waterlogged roots.

Adjusting Light Exposure

Arrowhead plants need adequate light to thrive. Yellow leaves could be an indication of insufficient sunlight. Place your plant in a spot that receives bright, indirect light. Too much direct sunlight can scorch the leaves, while too little light may cause them to turn yellow and stunt growth. Monitor your plant’s appearance and adjust its location as necessary.

Fertilizing Tips

Nutrient deficiencies can also cause yellowing leaves. Fertilizing the plant regularly with a well-balanced houseplant fertilizer can ensure it receives the appropriate nutrients. Follow the manufacturer’s instructions for application rates and frequency. Be cautious not to over-fertilize, which could lead to nutrient burns and further leaf discoloration.

By employing these prevention methods and solutions, your arrowhead plant should remain healthy, with vibrant green leaves that signify proper care.

Signs of Recovery

After addressing the issues that caused your arrowhead plant’s leaves to turn yellow, it’s essential to monitor the plant for signs of improvement. One of the first things you might notice is that the new leaves emerging are green and healthy, indicating a positive response to the changes in care. Be patient, as it might take a few weeks for the results to be clearly visible.

As your plant recovers, you’ll also see that older, yellow leaves are gradually being replaced by newer, greener leaves. The yellow leaves that were severely affected may eventually fall off on their own, making room for new growth. It’s crucial to continue following the recommended care practices for your arrowhead plant, such as properly watering, maintaining the appropriate humidity level, and providing sufficient light.

You can further support your plant’s recovery by ensuring its root system is healthy. If you suspect overwatering or poorly-drained soil as the culprit of the yellowing leaves, be sure to check and adjust your watering practices and make sure the pot has drainage holes. Additionally, consider using a well-draining soil mix and re-potting your plant if needed.

Regularly misting your arrowhead plant or using a pebble tray can help maintain high humidity levels, which are vital to its recovery. Alongside proper watering practices, be mindful of your plant’s light exposure. Position it in a spot where it can receive bright, indirect sunlight, as this is ideal for its growth and recovery.

In summary, the key to successful recovery of your arrowhead plant is addressing the underlying issues and providing it with the right growing conditions. With consistent care and attention, your plant should bounce back and continue to thrive, displaying vibrant, green foliage.

Frequently Asked Questions

Overwatering issue?

Overwatering is a common cause of yellowing leaves on Arrowhead plants. It is essential to only water your plant when 50% of the soil volume is dry. Overwatering can lead to root rot and other issues, which may cause the leaves to turn yellow. You can tell when your Arrowhead plant needs water, as its leaves will start to wilt slightly.

Lack of proper nutrients?

A deficiency in nutrients can cause Arrowhead plant leaves to turn yellow. These plants are moderate feeders and need proper fertilizer application to develop healthy foliage. Make sure to provide your plant with the appropriate nutrients and care to prevent yellowing leaves.

Exposure to direct sunlight?

While Arrowhead plants enjoy bright, indirect light, exposure to direct sunlight can cause their leaves to turn yellow. Place your plant in a spot with filtered sunlight to avoid sunburn and maintain vibrant foliage.

Underwatering problem?

Underwatering can also cause yellowing leaves. Ensure that you water your plant properly by checking the soil’s moisture level and watering accordingly. Remember that the leaves may wilt slightly when your Arrowhead plant needs water.

Pest infestation?

Pests, such as spider mites and aphids, can cause Arrowhead plant leaves to turn yellow. Regularly inspect your plant for signs of pests, and treat promptly to prevent further damage.

Temperature stress?

Temperature fluctuations and stress can cause Arrowhead plant leaves to turn yellow. Make sure to maintain a consistent temperature around your plant and avoid placing it near heating or cooling vents.

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