If a white, easily wipeable coating forms on the leaves of your gerbera, then it may be suffering from powdery mildew. If you do nothing about it, the plaque will spread to the whole plant.
Gerberas affected by powdery mildew should be removed as soon as possible
Although the fungus is rather careful with the infested plants, because it needs living plants for its nutrition and survival, the sight is not pretty. In addition, the infested plant takes care, it grows poorly and can also die if the infestation is very severe. As a precaution and to prevent the spread, you should avoid crowding and rather place your gerberas in the pot a bit. Also avoid strong temperature changes and draughts.
The essentials in brief:
- tends to occur in dry air
- ideal temperature for diffusion: around 20 °C
- Incubation period: from 6 days
tips
A gerbera affected by powdery mildew can live for quite a long time, but you should still act quickly or all your plants will be affected soon.