What pests attack tuberous begonia?

Broad mite, Scale insects, Two-spotted spider mite, Vine weevil

What diseases affect tuberous begonia?

Grey mould, Tomato spotted wilt virus, White mould (Sclerotinia)

Tuberous Begonia pests and diseases: how to recognise them

Q: Which tuberous begonia problems need quick action?

Grey mould: Fuzzy grey-brown mould on decaying buds, flowers, leaves, stems or fruit in humid weather. Tomato spotted wilt virus: Young leaves with a bronze cast that later show small dark brown spots; leaves may cup or roll. White mould (Sclerotinia): A soft, wet rot on stems, often near soil level; plants suddenly turn yellow, wilt and collapse.

Begonia × tuberhybrida

The pests, diseases and disorders recorded for tuberous begonia in our library, each with a photo and its first symptom. Every page has the full list of symptoms, organic and chemical treatment and prevention.

At a glance

Problems in total	7
Pests	4
Diseases	3
Need quick action	3

How to grow tuberous begonia · All pests and diseases

Pests

Broad miteNew leaves are twisted, hardened and distorted, with bronzed undersides; the mites are too small to see without magnification.Photo: David Riley, University of Georgia, Bugwood.org, CC BY 3.0, Wikimedia Commons
Scale insectsSmall round or oval bumps on stems and along leaf veins, mostly underneath, that do not move and look like shells or scabs.Photo: BARAKAT2011, CC BY-SA 3.0, Wikimedia Commons
Two-spotted spider miteFine pale stippling or mottling on the upper leaf surface; leaves may turn bronze.Also called: red spider mitePhoto: Gilles San Martin from Namur, Belgium, CC BY-SA 2.0, Wikimedia Commons
Vine weevilPlump, C-shaped, white, legless grubs up to 10 mm long with light brown heads among the roots.Also called: black vine weevilPhoto: Opuntia, CC BY-SA 3.0, Wikimedia Commons

Diseases

Which tuberous begonia problems need quick action?

These spread or do lasting harm fast; check the plants and start treatment the day you see them.

Grey mould: Small, almost translucent spots that turn brown and water-soaked; affected tissue goes soft, dark and dies, and buds and flowers shrivel.
Tomato spotted wilt virus: Dark brown streaks on stems and leaf stalks; tips die back, and plants are stunted or grow lopsided.
White mould (Sclerotinia): Masses of fluffy white, cotton-like mould on the affected parts, especially in cool, damp weather.

Plants with many of the same problems

Which plants each problem affects: sources

The links between these problems and the plant were checked against these pages.