The plague of black flies in marijuana

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Blackflies, also known as fly ground

Blackflies, also known as fly ground

It is not the most devastating plague cannabis, but if this insect attacks the marijuana, harvest could be lost. To prevent its occurrence, have to take care of the lower parts of the plant.

Blackflies, also known as fly ground is a small dark colored insect that can appear on the bottom of the plant or even in the substrate. Its food is organic matter is decomposing and its habitat is the site of the plant that has low light, high humidity and high temperatures. Therefore, the crops grown in greenhouses or in indoor areas are more likely to develop this type of pest.

At the time to display one of these flies have to remain vigilant about the eggs that have been left in the marijuana plant. A female specimen of this insect may leave up to 200 eggs in culture and new larvae appear in a two or three days and acquire adult size in two or three weeks. Be also careful with those larvae (pre-made adult fly period) because they also feed hairs that are at the roots of the plant and may even eat the stem too.

Be also careful with those larvae

Be also careful with those larvae

How to know if the plant is infected?

When it fails to locate the fly is not too easy to tell if the plant is infected or not. You can see that the plant grows slowly and can see small incisions in the stem. If, however, we see that the fly is already on the ground, then there will be no doubt that the plant is infected. A larva can be recognized as a “white spots” that abound in the surface soil of the earth are.

A larva can be recognized as a "white spots"

A larva can be recognized as a “white spots”

Is it possible to combat the pest?

Plagron Mighty Neem / Organic Protector against pests and insects

Plagron Mighty Neem / Organic Protector against pests and insects

In this, as in other diseases, we must be very careful with the quantities of insecticide or similar elements that are used as if they were sorely product the plant can even get to kill it. Another aspect to consider is that adult plants better withstand pests such young plants. So keep that in mind when growing. The younger a plant are the worst effects of a pest and the pest can stay on the plant throughout its life.

Moreover, one of the best solutions for any kind of mishap in any crop is usually prevention, and in this case can prevent the onset of the plague of black flies watering it with Neem oil as Plagron Mighty Neem / organic guard against pests and insects, is a pesticide of organic origin that helps the development and growth plants and makes them more dense and more resistant to deficiencies and stress can have on the growth process and strengthens the plant in order to avoid possible pests. With this oil a strong and protected crop pest is achieved. It can be used in two ways: by spraying the plant in the vegetative growth stage or irrigation during flowering.

You can also control the pest with Neem flour; from Piensa En Verde we want to help you fight this scourge and we offer this product: Powder Organik Neem cake ECO , a green powder leaves no residue on the ground and that significantly improves the characteristics of the soil where the plantation is located, to prevent it from being contaminated by any pests. This powder is cast around the pot to give you an farinaceous base on land that prevents the larvae (if any) come to the surface and, in turn, also prevents the flies can not go to the substrate and not you can feed it and lay its eggs there.

Neem powder ECO

Neem powder ECO

Use of insecticides

Acaricide / Insecticide Concentrate Flower

Acaricide / Insecticide Concentrate Flower

Although we must not abuse insecticides, sometimes can be helpful and can be recommended to control a pest. If you opt for an insecticide, it must be used regularly to make its use effective.

It should be used although insects and eggs are no longer see and larvae are very resistant. A good insecticide that we can recommend from Piensa En Verde is the Acaricida / Insecticide Concentrate Flower , is made ​​of a natural substance that acts primarily by ingestion but also by contact against larvae and adults.

A good trick is to add one or two drops of dishwashing detergent per liter of insecticide to be used. The detergent has properties that help the insecticide to penetrate the leaves of marijuana and is the best way for the insect in question is infected. If an insecticide is used, follow the instructions of the manufacturer to get the most performance to the product very well.

 a lemon with several nails

a lemon with several nails

Another way to avoid a plague of black flies in marijuana cultivation is to a lemon with several nails (nail in spice). It seems that the smell coming from the mixture of cloves and lemon do not like these insects and, therefore, does not come close to crops where they have put this insecticide “home”.

To previous recommendations we must add the fact of not having the puddled water or excessive watering plant because, as mentioned previously, moisture favors the appearance of this type of pest.

Also an effective method to stop this plague (and the like) is to place a mosquito net around our culture, so, no insects can approach our marijuana plant.

place a mosquito net around our culture

place a mosquito net around our culture

And one last tip: if the crop has been attacked by this fly, be sure to thoroughly clean the environment if you go back to farming.
By Noelia Jiménez, Team Piensa En Verde

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PEV Grow born in 2009, It´s a company located in Valencia, a coastal city in eastern Spain. Born after 1 year of intense work our aim is to advise on the use and the use of marijuana seeds known. We ship seed anywhere in the world...