China aster pests and diseases: how to recognise them
Callistephus chinensis
The pests, diseases and disorders recorded for china aster 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 | 4 |
|---|---|
| Pests | 1 |
| Diseases | 3 |
| Need quick action | 3 |
Pests
Diseases
Fusarium wiltWilting and yellowing that often starts on one side of the plant, a branch or even a leaf; lower leaves yellow first.Photo: Schlaghecken Josef, CC BY-SA 4.0, Wikimedia Commons
Grey mouldFuzzy grey-brown mould on decaying buds, flowers, leaves, stems or fruit in humid weather.Photo: Schlaghecken Josef, CC BY 4.0, Wikimedia Commons
Tomato spotted wilt virusYoung leaves with a bronze cast that later show small dark brown spots; leaves may cup or roll.Photo: Downtowngal, CC0, Wikimedia Commons
Which china aster problems need quick action?
These spread or do lasting harm fast; check the plants and start treatment the day you see them.
- Fusarium wilt: At first the plant seems to recover overnight, but the wilt soon becomes permanent; growth is stunted and few fruits form.
- 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.
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.
- plants.ces.ncsu.edu/plants/callistephus-chinensis/
- plants.ces.ncsu.edu/plants/gasteria-bicolor/
- rhs.org.uk/disease/fusarium-wilts
- ipm.ucanr.edu/home-and-landscape/fusarium-wilt/
- rhs.org.uk/disease/grey-mould
- ipm.ucanr.edu/PMG/GARDEN/PLANTS/DISEASES/botrytis.html
- extension.unh.edu/blog/2022/02/tomato-spotted-wilt-virus-tswv-virus-you-should-know-be-abl
- pnwhandbooks.org/plantdisease/pathogen-articles/common/plant-viruses/impatiens-necrotic-sp