The only treatment for these nematodes is to remove infested plants to avoid its spread. Humidity and bright light in winter increase the brightness of the foliage color. Sort by. Destroy the infested plants entirely, do not compost them. Others will develop brown, water-soaked spotting on the leaves. save. However, just like any other plant, begonia might develop problems such as dropping leaves. View Entire Discussion (0 Comments) Besides occasional pruning, begonias don't require much more maintenance—they are … Some cultivars’ leaves will turn red. The begonia appears wilted but doesn’t recover after being watered. The infected begonia plant typically develops a gray, fuzzy mold as the blight progresses. There are several practices that you’ve to carry out to ensure that your begonia is … hide. Flowers commonly bloom bright red to light pink in color. White Coating On Leaves Caused By Powdery Mildew Powdery mildews are caused by fungi that live on the surface cells of plants. Overwatering begonias causes their leaves to turn yellow, a process called … The lower leaves turn yellow and might drop. Tuberous begonias like to have space between them so that the air can circulate. Outdoors, water tuberous begonias in the garden with a drip system or a hose than drips directly into the soil. Botrytis blight (Botrytis cinerea), also called stem rot or brown rot, causes brown, moist spots to form on the flowers, leaves or stems. Other common begonia issues include curling leaves, flowers turning brown, leaves turning brown, and leaves turning yellow. The Begonia maculata is a relatively fast grower and makes an excellent indoor houseplant or terrarium plant. A few will get brown lesions on the stems. report. Be the first to share what you think! best. The name Angel wings was given for the shape of their leaves that are kind of like Angel wings. Is this normal? To prune, pinch the stems back to the first or second healthy bud from the tip. Foliage: This species is a cane stemmed type Begonia that has thick stems and fairly large nodes. Above: Begonia rex ‘Red Tango’ mixes well with other shade- and humidity-loving plants such as asparagus ferns and geraniums. 0 comments. no comments yet. Begonias are succulent plants with stems that are mostly water, which makes them very sensitive to moisture and fungus. This forces the begonia to branch at the pinch point, resulting in more stems, flowers, and leaves. This is where the stems close to the base just turn to mush and rot off. My begonia stem is turning red but it also sits in front of the sun a lot. Infected begonia leaves will be covered with a white or ash-gray powdery mold. Having good air flow helps deter this. share. Cane begonias have these a-symmetrical angel wing leaves growing on long bamboo-like stems. Begonias are known to be leggy so the foliage can be pinched off to encourage the shrub shape. 100% Upvoted. Polka Dot Begonia … Log in or sign up to leave a comment Log In Sign Up. Leaves are glossy and have a red outer edge on some varieties and a red underside. The pinched leaves (with a little stem) can go on a bed of peat or other growing medium and will push roots from the stem point to produce a new plant. Avoid overhead sprinkling. Polka dot Begonias are part of the so-called cane begonias. There are hundreds of cultivars of B. rex to choose among, usually classified by leaf size—small (three inches or less), medium (three to six inches), or large (more than six inches). Planting too deep or planting with too many other plants close up to the stem can cause stem rot. The most common reason begonia leaves rot is too frequent watering. Some begonias appear immune. Above: begonia rex ‘ red Tango ’ mixes well with other shade- and plants! Garden with a white or ash-gray Powdery mold being watered will develop brown, leaves turning brown leaves! 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