Poinsettia
Key warning symptoms:
- Mottle
- Shoestringing
- Deformation
- Distorted bracts
Poinsettia mosaic virus is widespread, with some poinsettia
varieties nearly 100% infected. But the virus apparently does the
plants no harm under good growing conditions. Under poor conditions,
such as too-cool temperatures or insufficient light, the virus can
cause mottled patterns on leaves or distortion of the
bracts.
Poinsettia mosaic virus is not responsible for many of the apparent
virus symptoms seen in poinsettias. Even when a plant tests positive
for the virus, the symptoms may be due to a nutritional problem or
other cause.
Poinsettia Screen
Other tests available for this host are:
