Those bugs that eat your plants probably feed birds and frogs. Bronzed or water-soaked areas develop on leaves of some cultivars. These critters feed at night and love the succulent leaves of begonias and pansies but tend to shy away from shamrock or daisy leaves because they are not as juicy. The most common plant bugs of interest to gardeners are cinch bugs, harlequin bugs, and squash bugs. Featured on: pests begonias. If you own a greenhouse, those white dots on your plants could well be mealybugs. Also, if the soil goes from wet to dry to wet, this could cause leaf problems, too. Begonias sometimes host giant whiteflies, which are flying pests that leave a waxy deposit on the leaves. In most cases, insects feed for a few weeks on plants and then move on. Begonia leaf curl is often among the first symptoms. These larvae live inside plant leaves, feeding and growing until they reach maturity. Beyond curling, gardeners will then begin to notice distinctive white patches on the leaves of the plant. Use our quick guide to identify the pest eating your plant and what solution would be best to keep that bug away from destroying your garden. (1-5 mm) in length and are covered in a waxy, white coating.Mealybugs tend to hang out in clusters around inaccessible parts of the plant, such as leaf axils, sheaves, between fruits, between twining stems, and some even colonize roots. Some leaf-eating insects can cause so much damage in just a few days that your plants might be dead within the week! It MAY be insects, but there are also other possibilities with begonias: Have you gotten your little guy's leaves wet? Whiteflies. Try to keep the soil evenly wet (not soggy). What Are Leaf miners? Viewing 6 posts - 1 through 6 (of 6 total) Author Posts 25th July 2016 at 10:59 am #9420… If this 'maggot' is small, hasa reddish brown head and is curled up in the form of a letter 'c' then it is a vine weevil grub and will eat the roots of your begonias. Fibrous rooted cultivars have small brown leaf spots.Some cultivars exhibit no symptoms despite heavy infection. Many types of begonia plants are also susceptible to powdery mildew. Answers. If you don't see insect pests, I wonder if slugs or snails are busy eating the leaves after dusk? I know, it’s difficult to do, but before adding new plants to your garden or your greenhouse, keep them separate and observe them for a little bit. The term leaf miners is a catch-all that describes the larvae of three insect species: Lepidoptera, Diptera, and Hymenoptera. Remove dead and dying flowers and leaves. Bulbaholic . Basically, leaf miners are the larval – or maggot – stage of several insect … Apply a fungicide to protect plants. Thrips, for example, are among the most common begonia pests which may cause leaves to curl. When watering, try not to do this - begonias are fussy and do not like wet leaves. That way, if you develop problems with hidden pests, you’ll be able to deal with them fast. Like leafhoppers, plant bugs inject a toxin into your plants’ leaves, buds, and shoots as they feed. Go out at night with a flashlight to see if you can find these critters. Foliar Nematode "Plants are stunted. These tiny, segmented insects measure between 1/20- to 1/5-in. Prevention is critical, as whiteflies aren't well controlled with pesticides. "Plant bugs" is a term that includes a number of true bugs, members of the Hemiptera order of insects. Home › Forums › Gardening Discussions › Flowers & Shrubs › Holes in my begonia leaves Tagged: begonias This topic contains 5 replies, has 4 voices, and was last updated by HaroldMe 3 years, 1 month ago. Excessive red pigment develops in infected leaves. 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