The Content Of The Article:
- Overview of pests
- Recognize reproductive diseases
Although the hard fern is actually quite robust and resistant, it reacts very sensitive to some care mistakes. These can then cause different diseases.
If ideal conditions are offered to the nest ferns, the occurrence of diseases and pest infestation can be minimized. Care errors, especially dryness and too low humidity, weaken the plant and promote the emergence of diseases.
In the case of nest ferns were observed more frequently:
- Scale insects
- foliar nematodes
- proliferation diseases
Overview of pests
Scale insects - persistent and voracious
Scale insects are sucking insects. The pests are increasingly on the undersides of the leaves and are therefore often not visible at first glance. On the tops of the leaves is found with the honeydew is often an indication of an infestation. This sticky substance is the excrement of the pests.
Scale insects are well protected under their hard shell. Nevertheless, the carpenter can remove scale insects without the use of chemical pesticides. If the infestation was detected early, it is quite possible to remove the scale insects manually.
" Tip: Scale insects should not be scraped off with their fingers. It could be females carrying their offspring under the tank. This would then spread to the plant.
With a sharp knife, the pests can be removed quickly and without residue. Slightly slower is the treatment of the scale insects with a cotton swab, which is dipped in alcohol, olive oil or soapsuds.
Small ovules - small and annoying
While aphids tend to avoid the moist, warm environment of the nest fern, small-leaved eels are comparatively common. The roundworms are only about a millimeter in size and can not be seen with the naked eye. The transfer takes place via the irrigation water. The pests penetrate through stomata in the leaves and are absorbed by the sap. This initially goes unnoticed. In the advanced stage, the fern fronds are marked by glassy patches. In the further course it comes to the brown coloring and to the sheet loss.
" Tip: So that the infestation does not spread to other plants, the nest fern is to be isolated.
Targeted control of the small ovules is difficult. If reacted quickly, the infestation can be contained by removing affected fern froth and using boiled water. Heavily affected plants should be disposed of better.
Thrips - Thunderstorms with good appetite
The thrips are only a few millimeters large brown-black insects. The narrow wings have black and white stripes. The nickname fringed wing indicates the frayed wings. The yellowish translucent larvae of the thrips have no wings. Thrips are generally not very well flyable and therefore crawl mostly. With their Stechrüssel the pests get into the outer leaf cells, where they feed on the plant juice. First, the apple green color of the fern fronds decreases and the leaves appear yellowish. In the advanced stage air penetrates into the damaged areas and this results in a silvery white coloring.
Thrips can be well eliminated with a shower of soapy water and olive oil. It is particularly important to treat the undersides of the leaves, because here are the pests preferably on. With predatory mites the thrips have natural predators. The mites can be purchased and are then positioned directly on the nest fern.
Recognize reproductive diseases
Occasionally, propagating diseases can occur in the nest fern. This leads to the rotting of spores. A widespread damage agent is the fungus Rhizoctonia solani. The disease can be identified on a variety of plant species and especially in a humid environment it comes to infestation.
The fungus is viable for several years in the soil. The infestation initially goes unnoticed and begins to spread from the root to the other parts of the plant.
" Danger: Peat-containing substrate promotes the occurrence of diseases. Always disinfect the substrate.
Especially young plants are affected. This leads to the fouling of spores and root rot. On the fern fronds, the decay process becomes evident through a brownish to reddish stain.
The occurrence of propagation diseases can be prevented by sterilizing the substrate. An adequate casting behavior is also a good preventive measure.
Further care mistakes
The nest fern shines in a rich apple green. If this is not the case, the cause is usually due to disorders caused by care errors. A too sunny location can rob the fern fronds of the color.If the leaves dry up from the edges and there are dark spots on the leaves, the nest fern has certainly gotten too much sun.
Brown leaves can also be an indication of wrong casting behavior. The nest fern does not want to be poured directly over the leaves. A similar damage pattern is also evident if the location was chosen too drafty. Brown leaf margins indicate a lack of water and too low humidity.