Beyond curling, gardeners will then begin to notice distinctive white patches on the leaves of the plant. Begonia leaf curl is often among the first symptoms. Place new plants in quarantine for a couple weeks. Excessive red pigment develops in infected leaves. 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. 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. Those bugs that eat your plants probably feed birds and frogs. Bronzed or water-soaked areas develop on leaves of some cultivars. Some leaf-eating insects can cause so much damage in just a few days that your plants might be dead within the week! Go out at night with a flashlight to see if you can find these critters. If you don't see insect pests, I wonder if slugs or snails are busy eating the leaves after dusk? The most common plant bugs of interest to gardeners are cinch bugs, harlequin bugs, and squash bugs. 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. Foliar Nematode "Plants are stunted. In most cases, insects feed for a few weeks on plants and then move on. These larvae live inside plant leaves, feeding and growing until they reach maturity. When watering, try not to do this - begonias are fussy and do not like wet leaves. Fibrous rooted cultivars have small brown leaf spots.Some cultivars exhibit no symptoms despite heavy infection. It MAY be insects, but there are also other possibilities with begonias: Have you gotten your little guy's leaves wet? Try to keep the soil evenly wet (not soggy). Viewing 6 posts - 1 through 6 (of 6 total) Author Posts 25th July 2016 at 10:59 am #9420… Featured on: pests begonias. Thrips, for example, are among the most common begonia pests which may cause leaves to curl. (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. If you own a greenhouse, those white dots on your plants could well be mealybugs. Like leafhoppers, plant bugs inject a toxin into your plants’ leaves, buds, and shoots as they feed. Also, if the soil goes from wet to dry to wet, this could cause leaf problems, too. The term leaf miners is a catch-all that describes the larvae of three insect species: Lepidoptera, Diptera, and Hymenoptera. Answers. 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. Whiteflies. That way, if you develop problems with hidden pests, you’ll be able to deal with them fast. Begonias sometimes host giant whiteflies, which are flying pests that leave a waxy deposit on the leaves. These tiny, segmented insects measure between 1/20- to 1/5-in. Apply a fungicide to protect plants. Basically, leaf miners are the larval – or maggot – stage of several insect … 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. Many types of begonia plants are also susceptible to powdery mildew. Bulbaholic . What Are Leaf miners? Remove dead and dying flowers and leaves. 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. I wonder if slugs or snails are busy eating the leaves of some cultivars bugs, harlequin bugs, Hymenoptera. 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