Another option, much safer than chemical products, are biological control agents: we can find several natural predators of thrips oftenly used by farmers to prevent/eradicate an infestation of thrips. Ambliselius cucumeris and Ambliselius degenerans are normally very effective, as well as the Orius laeviatae bedbug. Remember that this type of pest control is much more effective in indoor grow rooms and greenhouses than outside.
It is important to remember that, as happens with other insects, thrips can act as viral vectors, that is to say, then can carry viruses and diseases and infect the host plants. It is believed that thrips can act as vectors of more than 20 different viruses.
In the event that – depite our prevention measures – we find thrips in our grow room we can use any organic insecticide (they work great gainst thrips) every 2-3 days and until we see no signs of activity on our plants. Potassium soap and pyrethrins (chrysantemum extract) are excellent options. They’re even more effective when used together. If these products are not enough, we can use chemical insecticides like Confidor (Bayer), although we’ll only use this type of products as a last resort due their impact on the environment (and the grower himself).
Using yellow sticky traps greatly helps to control the population of adults (and also to detect their presence), since they’ll stick to these traps letting us know they’re threatening our plants. Also, our grow room should be clean and free from insects and dead plant matter and we should disinfect all growing tools and equipment (scissors, pots, etc.) between harvest and sowing. Removing other plants and/or weeds (especially outdoors) is also useful, since they could be used by thrips to propagate and infect our plants later on.
Thrips normally enjoy warm climates with constant temperatures (24-28ºC) and relatively low humidity levels. If these conditions are found – and there is not any prevention system – their presence will be obvious on the entire crop in a few time.
Thrip and marijuana
As we already mentioned, thrips are a group of small insects (1-2mm in length) formed by several species which attack a large number of plants and cultivars. They are actually the smallest flying insects found around the world. The most common species found on cannabis plants is Frankliniella Occidentalis, which can be found almost anywhere and is also primary vector of a large number of plant viruses. If environmental conditions are optimal, they can produce up to 11-12 generations per year..
Thrips leave these stains on the surface of the leaves
While thrips (insects of the Thysanoptera order) are not usually a serious thread for our crops, thay can be a pain in the neck if not identified and treated on time, especially when propagation conditions are optimal. These small flying insects are usually found in indoor grow rooms and greenhouses, where the warm temperatures greatly promote their propagation. They attack a vast number of plants like cereals, fruits, vegetables, etc.
How to treat thrips on cannabis plants While thrips (insects of the Thysanoptera order) are not usually a serious thread for our crops, thay can be a pain in the neck if not identified and
If you want to use chemicals to clean your space and crop, try to use the least toxic substances available. Remember to use both masks and gloves when handling all toxic chemicals.
Russet and broad mites are tiny garden pests that can wreak havoc on cannabis plants, stunting their growth and destroying your yields.
Spinosad products are also organic and harmless to pets, children, and plants. Spinosad is an organic pesticide made from the fermentation of certain kinds of soil bacteria. This form of insecticide can be used both as a topical spray and at the roots. When added to water, these products are only good for about 24 hours, so only mix what you need at any given time.
Growing cannabis can be an exciting and rewarding hobbie. But what happens if others decide to enjoy your cherished crop before you do?
Thrips are a common problem faced by canna-cultivators. They are a minute pest that literally suck the plant sap out of your crop. Thrips also come in several different species. They can be tiny winged insects (measuring in the millimetres), or they can look like small, pale worms.
Worse? While not a significant threat to outdoor growers, they thrive inside. Indoor grows and greenhouses are their favourite environments. They love high temperatures. Thrips can also be persistent if not treated properly. And if not eliminated early, they can significantly reduce yields.
The best way to rid yourself of thrips is to never have an infestation in the first place. Make sure that you thoroughly sanitise your growing space before you begin. This means not only keeping the place spotless, but removing all dead plant matter.
Regardless of their species, thrips are the bane of farmers everywhere. They can reproduce up to 12 times per year. When mature, they can survive just by flying from one plant to another. Outside of cannabis, thrips’ favourite crop seems to be cotton, although they can damage many kinds of crops. But they really seem to love cannabis! Unfortunately, they are particularly damaging when they appear early on in the grow process.
Eradicating thrips once they have established a presence is the only way to save your crops and prevent a new infestation. The best method (without using harsh chemicals) is to use potassium soap or neem oil. Pyrethrins and rotenone are also good options, although use sparingly as pyrethrins are also highly toxic to bees.
Thrips are a common pest facing indoor cannabis cultivators. They can seriously damage the plant and lower yields. Here is a guide on how to get rid of them.