The Content Of The Article:
- Monilia Peak Drought: Disease picture and immediate treatment
- Verticillium infection: clinical picture and immediate treatment
It is not uncommon for forsythia to be afflicted with insidious Monilia lace drought or Verticillium infection. Then it's time to act quickly.
Your forsythia in the garden just gives a sad sight? Does she wither away, even though you regularly water and fertilize the plant? Eventually the shrub is then attacked by the pathogen Monilia laxa or by a Verticillium infection. Here's how to spot these diseases and what action you can take to protect each plant and your garden.
Monilia Peak Drought: Disease picture and immediate treatment
If your forsythia begin to wither suddenly in the area of the tips during or after flowering, they are probably affected by the fungus Monilinia laxa. The wilt known as Monilia lace drought extends to the branches about 20 to 40 centimeters. It captures flowers and leaves that either fall off the plant directly or remain limp.
Measures against the Monilia peak drought:
➭ In damp weather, the fungus can sometimes be recognized as yellowish to gray on the branches. But do not worry, if you cut back the affected branches immediately, it promises very good chances for healing. For this you may cut at least 15 centimeters beyond the visibly diseased area into the healthy wood. At the time of flowering, you can also use fungicides.
Dispose of the cut parts of the plant over the bio waste bin or the residual waste. Do not throw the branches on the compost. The pathogens can hibernate there and return to your garden when using the humus.
➭ Check fruit trees in your garden for possible infestation by Monilia laxa, which may also show up as top drought or as fruit rot. Fruit rot can be recognized by the ring-like brownish discoloration of the fruit. For stored fruits such as apples, these discolorations may also be blackish glossy and eventually include the entire fruit.
➭ Make sure that your forsythia is loosely planted with a not too timid cut. In the case of single plantings, pay attention to the greatest possible distance between the shrubs.
Verticillium infection: clinical picture and immediate treatment
If the wilt of your forsythia does not occur at the tips, but rather at older, inner parts of the plant, Verticillium infection may be present. This dangerous disease comes from the fungus Verticillium dahliae or Verticillium albo-atrum and is a little harder to treat. An accurate diagnosis is unfortunately only possible by laboratory examination.
Measures against verticillium infection:
➭ There is a test that gives you clues about a possible illness. To do this, remove the bark from an affected branch. If you observe brownish veins running along the wood, Verticillium infection is very likely. It is best to cut back the infested shrub immediately. Also remove all fallen leaves and dispose of the entire plant material this time over the residual waste or the bio bin.
➭ If the same symptoms reappear after foreshortening, you should remove all forsythia and also replace the surrounding floor to protect your garden. The Verticillium infection can indeed spread to many different plants and leads to complete death if unsuccessful.