Anthurium plants are usually quite sturdy, but occasionally growers of even the hardiest plants run into problems. Perhaps your plant was doing well for a while, but now it doesn’t look so good. In this article, I will get into several of the problems that you may be encountering along with their solutions. See my previous article on anthurium care if you are looking for more general information on raising an anthurium plant.
Light levels are a big determinant of the health of your plant. If the leaves of your plant appear to be bleached and the tips of the leaves are turning brown, the likely cause is too much light. Try moving your plant further away from the light source or finding a way to shade it from the strong light. If your plant produces a lot of leaves but few flowers, insufficient light may be the problem. Try increasing the light that it receives, but make sure you don’t go too far and give it too much light as evidenced by the symptoms listed above.
If the leaves of your plant are turning yellow or brown, this could be a sign of over-fertilization. You should stop adding additional fertilizer for a while. Then you should flush out the excess fertilizer by using a lot of water. But just make sure that after you have flushed out the fertilizer you allow the water to drain well.
Fungal problems are generally caused by excess moisture and not enough oxygen getting to the roots of your plant. If your plant appears to be stunted and it is producing pale, wilted leaves, there is a good chance it is suffering from fungal root problems. The prognosis is generally not as good as with some of the other problems you might encounter. But what you can do is try repotting with a potting mix that drains better and allows more air to reach the roots.
Most of the problems your anthurium plants face can be resolved by using the solutions mentioned above. However, fungal problems are particularly dangerous and rather than trying to solve them after the fact, you should try to make sure that they never occur in the first place. The best way to do this is to use a good potting mix that allows a lot of air to reach the roots. Also, be sure you allow any water you give your plants to drain out of the pot and away from the roots of your plant.