Caladiums thrive where the temperature is between 70 to 85 degrees F. Make sure you mist your caladium regularly, and use a humidifier if placing your caladium plant indoors. The most common reason plant leaves turn yellow is because of stress.Whether due to inadequate watering, excessive heat, or pest infestations, yellow leaves are a sign of sickly cannabis plants and must therefore be addressed as soon as possible.To understand the science behind this, we must first look at the contents of a typical leaf and its relationship to the plant’s overall health. But don’t panic if it suddenly changes color. Caladiums have their share of disease which can do a number on your plants, keep a watch for. Right before the leaves fall off the plant, they will turn yellow. A plant that is not provided moist air will begin to turn yellow and wilt. Even the most novice of gardeners knows that indoor plant leaves turning yellow is not a good sign. The problem is that yellow leaves is the most common symptom of a wide range of houseplant ailments, and it can take a little experience to know what the root of the problem is. The leaves of caladium plants, some as long as 24 inches, have marbled, spotted, or veined patterns in red, pink, white, and green. When grown indoors, they do best with lots of heat, bright but indirect light, and plenty of humidity. Other signs that your plant is not getting enough water are leaves that are curling inward, … Caladiums should be dug when the leaves turn yellow and most of the foliage begins to look "tired" and falls over. In some way or another, if you have had plants, surely you have already gone through this process when you saw certain leaves turn yellow. Yellow Leaves + Fading to Green + or Bright Yellow = Usually accompanied by wet soil, or even fungus gnats if the problem has persisted for a while. The most popular indoor caladiums are the “fancy-leafed” and “lance-leafed” varieties. Bases of stems may be blackened. This altogether means that your plant is overwatered. Even under the best conditions, caladium foliage lasts only a few months before the leaves start to die back and the plant goes dormant again. A caladium is a tuberous, rooted perennial that originally came from South America. Fusarium Wilt; Bacterial Leaf Spot; Fusarium Wilt. Caladiums grow well in a humid environment. Usually lower leaves drop first, although the whole plant may be affected. If your plant is dry – you can stick your finger into the soil to check it – try to get it on a regular watering schedule. Curled leaves on indoor plants can be caused by a variety of issues, so it is important to understand the various causes so that you can take effective action. Let’s take a look at the main causes and solutions for curled houseplant leaves. Fusarium wilt is encouraged by long hot periods, signs include drooping of the lower leaves and also the leaves turning yellow. 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