Remove red spider on our culture

Reading Time 3 minutes


It is one of the most common pests in plantations of cannabis but we can address it in many ways.

The red spider is tiny (measuring 0.5 mm). But it is as small as harmful. It is very difficult to see, so we must be very attentive to our culture. Perhaps, before seeing the arachnid we see the traces it has left in our plant. At first we can see that the leaves or stems have a very small white dots. If the pest is more advanced the leaves lose color and you can even get to fall, when the time comes we will see the fine cobwebs behind the leaves. And if the stage of the pest is very advanced, the leaves are covered full of spider web and the plant dies.

The leaves have a very small white dots and we will see the fine cobwebs behind the leaves

Factors conducive to this plague


A number of causes that can favor the appearance of red spider on our culture must be taken into account. This tiny spider usually occurs when the plant is in an environment of high temperatures and very low humidity. What this bug likes is dry environment and high temperature. Also, if the plant is in a small pot and not watered far the arachnid stay at ease. If we are growing inside, plague can ruin our harvest as the temperature can be higher than outside and, separately, the plant is not in contact (as when abroad) with other insect predators that could kill it and keep safe our plantation.

How to end the plague

When, indeed, we note that our plant was infested with a plague of red spider, we have to quickly find solutions. There are home 01-spidex-koppert-contra-arana-roja remedies that can fight these arachnids. We can divide onion skins on the floor of the crop and this food served repellent. Also, you can make tea with water and fern leaves with which to irrigate the crop. They can also be made ​​with infusions of wormwood mixed with sodium silicate which can spray the plant in autumn and spring. Another home remedy is to clean the underside of leaves with a cotton ball soaked in a mixture of alcohol and water (half water and half alcohol), this system may prove more tedious because we must clean sheets every week until the end of culture.

Download completely free the marijuana dictionary
Free Download Cannabis Dictionary 2023 Edition
Insert a correct email address
You must accept the privacy policy
SITE OF SHOPS ONLINE S.R.L with CIF: B98262777 and address for notifications in C/ VEREDA MAS DE TOUS Nº 22 LOCAL C, 46185 LA POBLA DE VALLBONA, VALENCIA, Phone: 961658271 Email: customer(at)
At the name of Consulting we process the information you give us in order to provide the requested service, perform the billing of the same. The data provided will be kept as long as the business relationship is maintained or for the years necessary to comply with legal obligations. The data will not be transferred to third parties except in cases where there is a legal obligation. You have the right to obtain confirmation as to whether SITE OF SHOPS ONLINE S.R.L. is processing your personal data and therefore you have the right to access your personal data, rectify inaccurate data or request its removal when the data is no longer necessary

Permanent solutions

If we opt for products hundred percent effective, we can find on the market several solutions that will end the plague of spiders very effectively. The Spidex Phytoseiulus persimilis (against spider mite) : it is a predator for biological control red spider. It is the predator’s used against this pest and an adult is capable of pulling 5 red spiders per day or 20 eggs or larvae. Because of its great capacity for predation eliminates the pest completely. For application must be pest and the humidity should not be too low.

You can also fight against red spider with a natural predator of pests that can be found in the product SPICAL 5000 Amblyseius californicus, is a product containing 5000 larvae of the species Amblyseius Californicus fighting red spider. We can even use it as a preventative though there is no plague.

5000 larvae of the species Amblyseius Californicus

Other organic products we can find is the Swirskimite that is a predator mite that combats (among other pests) to the red spider. The Swirskimite has the peculiarity to appear in envelopes that are hung halfway up the plant. As a preventive method you can hang an envelope plant.

Preventive method

The Red Spider is a biological insecticide that can also be used, is a contact insecticide eliminating insects quickly and also destroys the pest eggs.

A contact insecticide

This product enters the plant through the sap and attacking the hormone systems of insects, breaking the reproductive cycle.

Finally, another very effective product that can be used is the OleatBIO Trabe, a nontoxic and also biological insecticide. Is regulated by European legislation and may be used in organic farming, also has a wide field of application in integrated and conventional agriculture.

By Noelia Jimenez Team Piensa En Verde

Click to rate this post!
[Total: 2 Average: 3]
Did you like the article, share it on social networks!
Alan Martínez Benito
Alan Martínez Benito
CEO of Pev Grow, expert grower with more than 20 years of experience.
In constant struggle for the regulation of cannabis, mainly in the medicinal field.
See more posts
Participate in the discussion

Leave a Comment