Cranberries: Detect and combat diseases and pests

The Content Of The Article:

Cranberry bushes are actually very robust. Different farm animals and also a special mushroom can cause the plant but strong and even lead to the death of plants.

Cranberries: Detect and combat diseases and pests

Cranberries are basically very robust plants that have few enemies. Virtually no pests attack cranberries. Only birds and mice like the taste of the red fruit, which the hobby gardener often falls to the load.

Cranberries rarely suffer from diseases. If they get sick, a fungus is always responsible for the disease. All other pathogens are the cranberry immune. Most commonly, cranberries are attacked by so-called naked basidians. The rust fungus is also a common pathogen of cranberry bushes.

What are naked basidiums?

Nude basidiums belong to the mushroom family. They infest, depending on the species, the shoots the leaves or the entire plant. In Europe, there are 26 different types of naked basidia. Only three species attack the cranberries:

  • Exobasidium vaccinii - attacks the leaves
  • Exobasidium splendidum - attacks the shoots
  • Exobasidium juelianum - attacks the entire plant

Another type of fungus that attacks mainly cranberries is the rust fungus. Also this form of the fungus is very dangerous for crops.

How to recognize a disease

Since fungi do not kill the plant, but only weaken it, they are particularly insidious. Mushrooms multiply by spores. They penetrate into the cells of the plant and can multiply there endlessly. Therefore, infection with fungi is particularly dangerous. Mostly the plants can not be saved anymore.

Exobasidium vaccinii
A fungal attack is often not recognized immediately. The fungus penetrates into the plant and multiplies there. During this process, the leaves or shoots lose their beautiful green color and become pale. Later, when the mushrooms have already multiplied, the leaves turn bright red. From the once dark green color is nothing to see. Usually only now the fungal infection is recognized.

Exobasidium splendidum
If the fungi infest the shoot, it too loses its color and later turns red. In addition, no new shoots are formed and the flowers are lost. The fruits of the bush are no longer edible.

Exobasidium juelianum
If the disease has spread and all leaves have got a red color, fungal spores cause further problems. On the underside of the leaf you can see a thickening. These pink bile will sooner or later be visible to the naked eye.

What to do with fungal infestation?

After the fungi spread through spores, it is easy for them to quickly infect many different plants. Since fungi are very aggressive in their approach, a rescue of the plant is not possible. Mushrooms have the property that they can specialize in a plant. They are constantly evolving to become immune to as many fungicides as possible. As soon as one recognizes the fungal attack, all infested plants are to be disposed of. It is important that they dig out of the bed and not cut off. Once the plant has caught a fungus, it will never get rid of it.

Natural enemies of the cranberries

Basically, cranberries have no enemies. Many hobby gardeners have no problem with some birds coming into the garden. After all, these drive many pests and eat worms and other insects. However, care should be taken that the birds do not eat all the cranberries. After all, these are at the top of the menu list of many different species of birds.

To keep the cranberries away from unwanted birds, there are several options. The cranberry bushes can be covered with nets. For this purpose it is best to use nets which have small tacks, such as e.g. this one here. But you can also set up a dummy of big birds or cats to keep out uninvited guests. As one often sees in native gardens, CDs are hanging on many trees. These reflect the sun and thus flash the birds. Birds can not allocate this flashing and prefer to stay away.

Another species that could cause problems is mice. Mice are always looking for a warm place to sleep. Since the cranberries are ground covering, mice can build a great house below them. This problem usually occurs when the shrubs are planted too closely. The cranberries grow very dense and thus provide the mice with a very good shelter. It will not be long before the mice get the taste of cranberry. They will not attack the plants, but they will eat the hobby gardener all the fruits from the bush.


Cranberries are very robust plants.They come with very hot, but also very cold temperatures well, which is why they are considered to be particularly frost-resistant. The cranberries have few natural enemies. Pests, which attack many other plants, have no chance with cranberries. Only birds and mice make the hobby gardener life difficult, because these animals love the taste of the sweet and sour fruit.

There is only one disease that can affect cranberries. Mushrooms have specialized in individual plants over time and so there are four types of fungi that destroy the cranberry bushes. If you have detected a fungal attack on the bright red color of the leaves and shoots, you have to remove the plant from the bed. A rescue of these is no longer possible.

Video Board: How to Cure Powdery Mildew.

© 2019 All Rights Reserved. When Copying Materials - The Reverse Link Is Required | Site Map