Thrips: what they are and how to eliminate them

Thrips: what they are and how to eliminate them

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There are many insects that can threaten the plants we cultivate in the fields and in our gardens, some are more common than others but it is good to be on your guard even from those that rarely show up because, when they do, they can cause damage not trivial. Among the uncommon but annoying we also find thrips, some little animals that can turn out a lot aggressive under certain conditions, in fact it is necessary not to create them to avoid having to fight them.

These parasites are in fact considered among the most annoying and create situations that are difficult to solve, but to eliminate them there are two ways to try, the natural one, with the biological struggle, and the traditional one, with the chemical fight.

Thrips: harmful insects

Let's first go see what these look like harmful insects to be able to recognize them at the right time and not waste time, reacting immediately. They are about one and a half millimeters long so we are able to see them with the naked eye. I'm equipped with wings at least when they become adults but do not use them much, in fact they prefer to walk on their own paws and take flight only in case of great danger, unable to defend themselves. The larvae are insidious and they are more difficult to see because they are smaller and lighter in color, but without wings and therefore unable to fly.

Thrips - which crops affect

Of the whole plant, thrips larvae tend to attack not so much fruit or flowers as leaves and in general the structure of the plant, are deposited on and in it suck the sap until it weakens it and even causes its death. The growers who have greenhouses or indoor plants know this well and who know how much the reproduction rate of this insect makes it very difficult to fight, even reaching the record of 12 times a year. Another aspect that makes them particularly hateful is their ability to move from one plant to another, once adults, thanks to their wings: this makes them even more dangerous.

There are environmental conditions that favor the establishment of thrips in our greenhouse, these insects love above all heat and humid heat. The leaves attach themselves, usually on the upper part of the leaf in all seasons of the year except in winter when they hibernate and then wake up when the thermometer rises above 16 ° C. Unfortunately for those who have greenhouses or indoor crops, in this type of environment the insect does not perceive winter, it does not hibernate and continues to lay eggs as if nothing had happened, it lays them under the leaves, then they fall naturally on the ground and hatch when the temperatures are optimal (from 26 ° C to 28 ° C).

Among the plants most attacked by thrips we find those of hemp and cotton, but they are not particularly picky and if they come across other plants they don't mind feeding on the sap of the latter. Other plants that this insect may like are those of tomato, vine, orchids, fruit trees, in particular those of citrus and peach. They are all potential victims of this insect that sucks its sap until it causes diffuse pigmentation that is incredibly painful.

Damage from thrips

We began to understand that this type of insects is a real mange for those who have greenhouse crops but let's find out what kind of damage it can do. First of all they cut the leaves, it is as if they had a hacksaw instead of the teeth with which they manage to pierce the surface of the leaves until they reach the sap they are so greedy and hungry for. The result on the leaves is the appearance of white spots or silver gray which over time can also become gods light crusts. Another sign of the presence of thrips are small dark colored balls that we can always find on the leaves, these are excrements that can be deposited on both sides.

At first, thrips damage can be mistaken for damage caused by most common insects like mites or leaf miners, but in more serious cases they cause the plant to lose color.

Thrips: how to eliminate them

First let's try to avoid that just the thrips come and visit us. As? We start by keeping all indoor growing environments clean, removing dead leaves and disinfecting the various equipment, which is useful not only to avoid the proliferation of parasites and insects, but also of molds and other organisms. This is only the first step after which we can purchase chromotropic traps yellow and blue, which work a bit like fly paper.

If the problem is on the outside, where we can exploit thegarlic to defend ourselves, as if there were witches to scare. The choice of natural protection products certainly also helps, such as Neem oil, which nourishes the plant and also defends it from various aggressive organisms.

Done all we could do to prevent, if we find ourselves having to manage an attack already in progress we can try the path of biological struggle going to introduce natural enemies such as predatory mites hoping that they will prevail. Another always natural method is the wash the plants with vegetable soap and then use a pyrethrum-based product. For those who prefer to rely on chemical products there are effective and easy to find because they can be purchased directly on Amazon such as this insecticide, effective and practical to apply.

Video: House Plant Pests No More: How To Kill Thrips, Spidermites u0026 Mealybugs Without Buying Any Products (June 2022).


  1. Shakalkree

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  2. Shauden

    I am very grateful to you for information. I have used this.

  3. Louis

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