Amblyseius cucumeris - Loose Predators - Thrip Curative System


Amblyseius cucumeris is a natural predator of numerous thrip species. These useful predators come in a loose carrier material allowing fast application onto infestations. Each Amblyseius predator will consume many thrip young and eggs, moving around the plant and flowers in search of their prey.

If thrips are present in large numbers (signs of leaf damage and groupings of thrip) we advise application of loose Amblyseius cucumeris and loose Amblyseius swirskii together 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 cucumeris before purchase, these can be found below.

When Should I use loose cucumeris?

We advise using loose cucumeris when thrip is already present on the plant. This releases a large number of active predators straight away to bring infestations under control.

How do cucumeris work?

Amblyseius cucumeris predatory mites will feed on thrip larvae and eggs on the plant itself. This effectively breaks the life cycle of pest thrips by killing the young and eggs before they can develop into adulthood. These predatory mites will not feed on the larger larvae or adult thrips, hence we advise the use of Amblyseius swirskii together with cucumeris to tackle infestations.

What conditions does cucumeris need?

Temperatures should be between 10-30 degrees with a relative humidity level of 70% for optimal thrip control using cucumeris (below 60% no eggs will hatch and populations cannot increase)

How many do I need?

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.

How long does it last?

The predators will begin consuming thrips straight away and given correct conditions will continue to feed and reproduce until control is achieved. If you cannot see thrip numbers reducing after around 7 days, you may need to apply more predators to gain control, greater numbers will win the battle!

How do I apply it?

Amblyseius cucumeris comes in a loose bran material that can be gently sprinkled directly onto leaves or heaped on rockwool blocks at the base of your plants. You can also use our distribution boxes which will act in a similar way to sachets, providing breeding sites for the predators to emerge from.

Chemical Pesticides

Cucumeris 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 Cucumeris.

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