Amblyseius swirskii is an effective predator of various thrip species.
These Swirskii predators come in a loose carrier material for instant release onto infestations. If thrips are present in large numbers (signs of leaf damage and groupings of thrip) we advise application of loose Amblyseius swirskii and Amblyseius cucumeris predators to tackle the infestation.
Severe thrip infestations may need more than one curative application of predators. Allow 7-10 days and reapply if thrips are still visibly present. Once under control switch to our preventative system to avoid further outbreaks.
Please ensure you have read the appropriate conditions for using Swirskii before purchase, these can be found below.
Our premium predator Amblyseius swirskii outperforms the alternative Amblyseius cucumeris given suitable temperature conditions. The Swirskii predators will kill larger stages of thrip larvae than Cucumeris meaning they eliminate numerous generations of a pest population.
We advise using loose Swirskii when thrip is already present on the plant. This releases a large number of active predators straight away to bring infestations under control.
Amblyseius swirskii are active at temperatures over 20 degrees and are tolerant to high temperature environments. This makes them ideal for use in glasshouses, polytunnels and indoor growing environments. Relative humidity should be around 70% (lower levels can cause lower egg hatch rates). DO NOT apply if you have used chemical treatments in the past 2 weeks.
Based on an average plant 1m in height. We recommend the following application rate;
Light infestation – 200 mites per plant
Heavy infestation – 500 mites per plant
Repeat applications may be needed against heavy infestations, introduce fresh predators every 7-10 days until control is achieved.
Supplied in shaker bottles you can apply the predators by rotating the bottle and gently shaking the contents directly onto the infested leaves of the plants. Swirskii can also be applied using distribution boxes which act as small breeding sites for the predators and can be hung onto stems or leaves. Full instructions are provided on delivery.
Swirskii is a living creature and can be affected by any chemical pesticides used within the previous few weeks. As a guide cease using pyrethrum or SB plant invigorator 2 days prior to use and other persistent chemicals or universal bug killers 1-2 weeks before using Swirskii.
Warning; Amblyseius swirskii is a non native predator and can only be applied indoors and in glasshouses. By purchasing this product you are agreeing to these restrictions.