Oleander is a wonderful plant that cuts a good figure, especially in the conservatory. But the oleander is also particularly susceptible to insects that damage the flower.Oleander is particularly susceptible to small insects
Would you like to breathe a Mediterranean ambience into your balcony or terrace? Then the oleander (Nerium oleander) is just the thing for you. It is one of the most beautiful plants in the Mediterranean and is suitable both as a hedge and as a bush or sapling. Since the sun-kissed plant is used to a lot of heat and sun rays, a little sensitivity is required when keeping the plant in the home garden. Among other things, you always have to see whether pests are spreading on the beautiful plant. The oleander is somewhat susceptible to this.
These pests are particularly common
Spider mites are the biggest problem. They seem to be in love with the oleander. The small animals can be recognized by the web that they leave on the leaves. The undersides of the leaves are particularly affected. They suck on the leaves, which causes leaf speckling. After a while, the entire leaf looks silvery.
If you want to get rid of spider mites, first increase the humidity. If that doesn't help alone, don't avoid using a pesticide. Preparations based on rapeseed oil (e.g. Naturen Pest Free) have proven their worth. They lie on the plant like a film and ensure that the spider mites suffocate underneath. So that this really helps, it is advisable to spray the oleander with the agent about three times a year.
Aphids actually don't stop at any plant. Not even in front of the oleander. It does not matter whether it is an outdoor or indoor plant. They often occur on the soft parts of the oleander, i.e. on the flowers and new shoots. With the harder parts, the animals have no chance. In the soft parts, they suck out the plant sap and then again excrete honeydew. The suction in itself is not that bad. But the honeydew, because the sticky juice attracts ants. In addition, soot dew fungi settle on it, which can be recognized by a black coating.
Aphids can actually be controlled quite easily. As a rule, it is sufficient to spray the oleander a few times with a sharp water jet. You can also get rid of aphids if you spray the oleander with nettle stock (instructions here) or garlic stock (instructions here).
Scale insects have a dark shield with which they can make themselves almost invisible in front of human eyes. They usually sit on the tips of the shoots and on the underside of the leaves. They also excrete honeydew, which in turn attracts ants and sooty mildew.
You can get rid of scale insects by spraying the plant with a mixture of soft soap and water. This causes the pests to separate from the underground. Then spray the oleander with a sharp jet of water and the problem should be solved. Otherwise, rapeseed oil-based agents help again.
Mealybugs can also spread out on the oleander. You can identify an infestation by the white, cotton-like spots on the plant. They suck out the plant sap and then excrete a white wax coating, which is just reminiscent of small cotton balls. These then serve as protection for the pest.
A plant protection product containing neem oil is suitable as the best remedy for mealybugs. Such as. Bayer organic pest-free Neem (e.g. available here). This remedy prevents the lice from reproducing. A mixture of paraffin oil, water and washing-up liquid that you have to spray on the leaves has also proven itself. The oil again covers the plant like a film and ensures that the nuisances suffocate.
What sounds very cute from the name are 1 to 2 millimeter animals that feed on the cell sap of the oleander and pierce the surface of the leaves with their mouth tools. If mushrooms then settle, this leaves speckles on the leaves. The thrips also deposit a lot of dark droplets.
Since thrips prefer a warm and dry environment, it is advisable to increase the humidity first. So spray your plants with water more often during the day (not during the blazing midday sun!). To combat the tiny things, you can also use preparations with the active ingredients of the neem tree (e.g. Bayer Bio-Pest Free Neem). Those who still have nettle brew or garlic brew ready can also use it to combat the thrips.