The decorative phlox is neither one of the particularly susceptible nor one of the very hardy plants. Newer breeds and hybrids are often more resistant to powdery mildew and other pests than some old varieties and are also generally more robust.
Phlox is most commonly attacked by powdery mildew
What diseases does phlox suffer from most often?
Occasionally, phlox is quite susceptible to powdery mildew. Effective treatment is not easy. It is best to pull out the affected plants completely and destroy them. If the infestation is very low, it may only be necessary to remove the infested parts of the plant. However, do not dispose of them in the compost. Use the compost as fertilizer, then bring existing germs back to the healthy plants.
The phlox sometimes also suffers from mooses. An infestation is indicated by stunted leaves and stems. Since the few millimeters small elders overwinter at the base of the stem, treatment is urgently needed. Cut the affected shoots back to the root and dispose of them sustainably.
How to prevent diseases?
Especially in monocultures and little natural gardens, the plants are susceptible to diseases and pests, and the phlox is no exception. A colorful mixed bed and good care have a preventive effect. Transplant your phlox occasionally and don't let the soil dry out too much. This will do the phlox good and protect against infection. Newer varieties are often bred for resistance.
Use a phosphate-rich and low-nitrogen fertilizer for Phlox. If the phlox gets too much nitrogen, it will only bloom sparsely or not at all. The same applies if phlox has been planted too deep. The Phlox's favorite fertilizer is well-rotted manure or compost, which you mix into the soil in spring. The right location can also protect against pest infestation.
The most important health tips:
- good care protects against diseases and pests
- fertilize with low nitrogen
- water sufficiently
- don't plant too deep
tips and tricks
Plant parts affected by diseases and/or pests must not be disposed of in the compost, otherwise there is a risk of infection for healthy plants that are fertilized with it.