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 (6 tests): | ||
| Pathogen | Symbol | |
|---|---|---|
| Cucumber mosaic virus | CMV | Submit Test Sample |
| Impatiens necrotic spot virus | INSV | Submit Test Sample |
| Poinsettia mosaic virus | PnMV | Submit Test Sample |
| Potyvirus group test | POTY | Submit Test Sample |
| Tomato spotted wilt virus | TSWV | Submit Test Sample |
| Xanthomonas campestris | Xc | Submit Test Sample |