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Why are my anthurium leaves turning brown?

Bloomscape's Grow-How™ team offers some anthurium care tips if its flowers or leaves are turning brown

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Anthurium flowers, also known as flamingo flowers (which are actually modified heart-shaped leaves) are strikingly crimson, and the anthurium plant is popular in many homes. Its beauty makes it all the more distressing when brown leaves start appearing on your plant.

Here are some of the common reasons why your anthurium is losing flowers, and how to help it recover.

Natural Aging of your Anthurium

Had your plant for a while? The leaves could just be experiencing natural aging! Old growth, particularly near the bottom of the plant, will naturally fade and drop to provide energy to newer growth. When leaves or flowers are wilting or turning yellow or brown, cut them off with sharp shears to ensure the plant devotes more energy to retaining its healthy growth.

Rapid all-over yellowing and browning of your anthurium is also known as “leaf blight.” If your plant is deteriorating rapidly and all over your plant is likely suffering from one of the issues below.

Your Anthurium is Suffering from Sunburn

The more light the plant receives, the more flowers your plant will produce – but direct sunlight will cause your leaves to dry up rapidly and kill the plant. Place your Anthurium in a spot with bright indirect light.

Nutrient Deficiency for your Anthurium

It might be that your anthurium is not getting enough nutrients such as nitrogen, phosphorus, and potassium after it has been depleted from your potting soil. We suggest using a controlled release fertilizer, at only ¼ the recommended amount on the label, for a few weeks until your plant begins to recover.

Overwatering Leading to Root Rot

Tropical plants like anthurium are highly susceptible to root rot if consistently overwatered. Keep the soil lightly moist during the growing season from March through September. Water your Anthurium well and then allow the top 25-50% of soil to dry out before watering again.

If your plant’s health is deteriorating rapidly, you’ll want to pull your plant out of the pot to check for root rot. If the roots are black or slimy, the only way to help your plant recover is to trim back the rot and repot your anthurium.

Save your Anthurium by Repotting

To save your anthurium, you need to repot it. You should be using a well-draining fresh potting soil. Here are some steps to repot your plant:

  • Choose a pot that is approximately 2” larger than the current pot with drainage holes.
  • Fill the new pot one-third of the way with your new potting mix.
  • Gently slide your anthurium out of its pot. Take sharp shears and cut off any dead or mushy looking roots.
  • Place your anthurium in the new pot, fill the pot with the remaining potting mix, and tamp it down.
  • Water the plant thoroughly till the water drains out the bottom, then let it rest.

Need more help?

We're confident your Anthurium will be back to normal in no-time, but if you've followed the steps above and things just aren't improving you can contact us here.