2024年7月29日 · Brown spots on leaves are typically caused by a variety of fungal diseases called leaf spot diseases. Plants that receive too much water or not enough airflow and sunlight are more likely to develop brown spots on their leaves due to moist conditions.

2023年4月22日 · There are a few possible causes of brown spots on houseplant leaves. Although most are not severe, it is essential to diagnose the problem correctly so that you can treat it appropriately. Here are some of the most common causes of brown spots on houseplant leaves and some tips on how to treat them.

2024年7月17日 · Spots form on the upper, lower, or both sides of leaves. Spots have colors ranging from yellow to orange-red to light brown, brown, or black. Leaf spots commonly have concentric rings around them or dark margins. The shapes of the spots may be angular or rounded. Some spots are sunken or even punch through the leaf, producing a hole. The edges ...

2024年9月12日 · Low-lying plants near poor drainage can take on brown leaf spots that can cause premature leaf drop. Providing good drainage and adequate nutrients to support healthy root growth is most important in the prevention of this disease.

Irregularly shaped, dark brown or black spots on leaves are one of the most common symptoms. These spots may also appear on stems and fruits. Infected plants may develop wilting or dieback of branches, leaves, or entire plants. Maple, oak, dogwood, ash, and sycamore trees are particularly susceptible.

2024年2月13日 · Identifying the cause of your plant leaves turning brown is key to determining how to treat them, but the source of the problem may not be immediately apparent. This guide will walk you through what the potential problems may be, how to fix them, and how to prevent future problems, so you can enjoy your favorite houseplants without worry.

2023年8月29日 · Leaf spot diseases cause several observable symptoms in affected plants. Brownish, tan, or black spots appear on leaves, often surrounded by dark margins or concentric rings. As the disease progresses, leaf loss is expected, interrupting photosynthesis and weakening the plant.

4 天之前 · If you find brown tips on your houseplant, you have to do a little detective work to find out what happened. This guide breaks down the most common causes of brown leaves on houseplants and offers ...

Leaf spots that are dark brown, slightly sunken and moist-looking may mean your plant has bacterial leaf spot. This isn’t good news, unfortunately. Solution: First, isolate your plant so other plants don’t get infected.

Leaf spots . Fungal leaf spots, which include brown, yellow, or black spots, are common on many vegetable plants. Experience and regular monitoring will alert gardeners as to the seriousness of the problem. Foliar diseases are frequently weather-dependent and vary in severity from season to season according to rainfall and temperature.