![]() During hot spells, spritz plants in the late morning and, if possible, water at noon to cool the roots. For this reason, begonias grow best if they are not exposed to hot, midday sun. ![]() Too Much Heat - Begonias exposed to high temperatures for extended periods of time also will sometimes drop flower buds. Spray the plants with a mild fungicide every month, starting early in the season. This vital addition will allow the soil to soak up more water and nutrients while enabling it to drain well – pretty cool, heh? Leaf spots of begonia are caused by a pathogen called Xanthomonas. As with most plant diseases, prevention is the best cure. Begonias with botrytis is a serious disease that can endanger the life of the plant. Powdery mildew is the most common, but this is easily treated. Generally, they are healthy, low-care plants, but they are susceptible to a few fungal diseases like botrytis of begonia. There are a few pests and diseases you need to watch for. Add plenty of organic materials to the soil every chance you get. Begonias are among America’s favorite shade plants, with lush leaves and splashy blossoms in a multitude of colors. Wax begonias are a very popular member of the Begoniaceae (begonia) family. Suitable for use in beds, borders, and as an edger. Propagating cane begonia is, in theory, the same as propagating wax begonias, but. The best way to prevent such problems is to deal with the soil over time. Begonia (Semperflorens-Cultorum Group) has some common insect problems. Susceptible to mealy bugs and thrips, rot, and fungal diseases. begonia pests (as well as some less common begonia diseases). This does not mean that the soil should not be watered, for dried out soil also can cause dropped buds (they get you coming and going). If flower buds drop off before they open, it is often a sign that the plants are growing in poorly drained soil, and/or that they have received too much rain or watering. Althought a variety of insects and diseases have been found on these popular annuals, few are serious, for wax begonias are virtually trouble-free, easy-to-grow plants that require only minimum attention.ĭrainage - This is not an uncommon problem with begonias.
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