Content
- Does the hollyhock often suffer from rust?
- How is mallow rust in the hollyhock?
- So you can prevent Malvenrost
- The most important tips against malvenrost:
- Tips
The so-called Malvenrost is actually a fungus
Does the hollyhock often suffer from rust?
There are not many diseases that cause the hollyhock, but the malvenrost can be very bad. While it is rather ugly in old plants, young hollyhocks can certainly do it.
How is mallow rust in the hollyhock?
Responsible for the Malvenrost is a mushroom, the Puccinia malvearum. He leaves ugly yellow spots on the upper side of the sheet. At the bottom of the leaves, these spots are reddish and sublime, like small pustules. The mallow rust often occurs in spring. The fungus can even overwinter in the plant.
So you can prevent Malvenrost
Prevent the mallow rust before you plant your hollyhocks. Choose the location carefully. He should get as much sun as possible and not be too humid. Plant the hollyhocks sufficiently far away from the neighboring plant, it should be about 40 cm.
The right care also contributes to the prevention. During the flowering season, water your hollyhocks regularly, even daily if necessary. Make sure, however, that no waterlogging arises. To firm ground, you can loosen up a bit and mix a little sand or gravel. If the soil is poor, fertilize your hollyhocks once or twice a month.
Often it is also recommended to cut off the first green leaves in the spring, because at this time the rust strikes especially frequently. Also helpful is a pruning in autumn. Although the above-ground green passes in winter, but during rotting the rust fungus can spread unhindered. With horseradish or compost broth you can spray your hollyhocks.
The most important tips against malvenrost:
Tips
If you have discovered the first signs of mallow rust on your hollyhock, then you should react quickly, the fungal spores are very robust and persistent.