This article will explore the reasons why anthuriums, or any plant for that matter, can turn a yellow color. It will also provide the reader with ways to prevent this from happening and how to fix it if it does happen.
Why Is My Anthurium Clarinervium Yellow?
Your anthurium clarinervium leaves are turning yellow because of overwatering, not receiving enough light, fungal disease, or an environment that is causing stress.
Let’s look at the most frequent causes of yellowing leaves on this plant and how to cure them.
Your anthurium clarinervium is probably yellow because you are watering it too much. If your plant sits in water, the roots will rot and they cannot absorb nutrients from the soil.
This plant should only be watered when the top section of the soil is dry. You can test the soil by sticking your finger in the dirt and checking if it is moist. You can also use a moisture meter, which is a device that is attached to the soil and will tell you if it needs water.
If you find that this plant needs water, make sure to let all of the excess water drain out before returning it to its pot. In fact, drainage holes are just as important as giving the correct amount of water. The last thing you want is the roots sitting in a pool of water at the bottom of the vase.
It’s important to take action if the roots have become rotten. In fact, not taking action can mean the end of your plant. Start by removing the plant from its pot to inspect the roots. You’ll know the roots are rotten if they are black and have a foul smell.
Prune all rotten roots with a pair of sterilized scissors or secateurs. Sterilize the scissors with some rubbing alcohol before cutting into the roots of your plant to avoid spreading diseases from one plant to another.
Once you have removed all rotten roots, repot the plant into fresh soil that drains well.
2. Fungal Infections
Anthuriums are susceptible to fungal diseases. You can tell if this is the culprit if the yellow leaves have black, brown, or white spots on them.
This is most often caused by high humidity and wet leaves. The spores for these fungi are everywhere, so it’s nearly impossible to stop them from landing on the plant.
The best thing you can do is remove any infected leaves immediately and move your plant out of high humidity conditions.
If there are already spots on this plant, try treating it with neem oil, which is an organic fungicide. Make sure you spray your plant down thoroughly and apply it every ten days for at least a month to make sure the fungi are gone completely before stopping the application of this product.
While fungicides work to fix the problem, the best prevention is to keep your plant in a bright area where air circulates freely.
Make sure you don’t overwater it and let any excess water sit at the bottom of its pot to avoid fungal spores from growing on wet leaves. If this does happen, make sure to remove any leaves that become infected with fungicides.
3. Lack of Sunlight
Your anthurium clarinervium might be yellow because it’s not getting enough sunlight. You need to keep this plant in a bright area where it can get at least six hours of indirect sunlight every day.
If you don’t have the ideal spot for your plant, try moving it closer to a window or outside during the daytime so it can receive more light. You might need to move it back inside at night so it doesn’t get too cold.
You can also use artificial grow lights ( Amazon link) if you find that your plant isn’t getting enough sunlight. Make sure the lights are about three feet away from the leaves and keep them on for a few hours a day if possible to make up for any lack of natural light in the area it’s located in.
4. Environmental Stressors
Your anthurium clarinervium might be yellow because it’s reacting to environmental stressors. You should check if it’s in a drafty area or there are any heaters blowing on it that could be making the leaves turn yellow.
It can also show signs of stress if you move its location or repot it into a pot with different soil from what is used to. In fact, anthuriums don’t like having their roots disturbed too often and will react by turning all of their old leaves yellow.
Yellowing Anthurium Clarinervium Leaves FAQs
I’ll go through some of the most common questions regarding yellowing leaves on anthurium clarinervium, starting with some of the most frequently asked ones.
Should I cut yellow leaves off my anthurium clarinervium?
Yes, pruning yellow leaves is a good idea because this will give the plant more energy to focus on the healthy leaves. It will also make your plant look a lot more visually appealing. Cut above the node to encourage new growth.
Does the type of water I use affect the leaf color?
Yes, I recommend using distilled or filtered tap water since they do not contain fluoride or chlorine that can be harmful to the anthurium clarinervium.
Will too little light cause my anthurium clarinervium to turn yellow?
Yes, if your plant isn’t getting enough light it will not be able to make the chlorophyll needed for photosynthesis and is going to start showing signs of yellowing leaves.
Will too much water cause my anthurium clarinervium to turn yellow?
Yes, if your plant is constantly getting too much water it will be droopy and the leaves might start turning yellow. Make sure you only give your anthurium clarinervium some more water when the top inch of soil is dry.
Will yellow anthurium clarinervium leaves turn green again?
No, it is unlikely that the yellow leaves will turn green again. The good news is that the new foliage will be green and luscious! Just make sure you give it enough light and the right amount of water.
If youâ€™re experiencing yellow leaves on your plant, the culprit may be overwatering, lack of sunlight, or a fungal disease. There are also environmental stressors that can contribute to leaf coloration, including insect bites and rough handling.
The good news is there are plenty of easy solutions for correcting these situations! Following the tips in this guide should stop the other leaves from turning yellow.
For example, if it turns out you were overwatering your plant all along (the most common reason), simply cut back on the watering frequency and remove any rotten roots.
Want more information about how to correct other issues? Please do check out our other posts by using the search bar at the top of the page.
Tim is an avid gardener from the UK. He was the founder of PlantCarer.com from 2021 to Sep 2023. He sold PlantCarer.com to Aaron. He has since started his own business called Seed To Supper, which provides new gardeners all the materials you need in a box (pots, seeds, compost and instructions) to grow your own delicious and nutritious vegetables and herbs from start to finish – no garden required.