Orius insidiosus - Release instructions

What’s in the OriLiv bottle?

Predator: Orius insidiosus –  most of the population is adults but you may find a few 5th instar nymphs.

Carrier: Vermiculite and buckwheat hulls – added so application is more even

Food: Bug feed  – a mixture of artemia and ephestia eggs (frozen & dead).

How to release Orius on crops: 

  • For best results, application should be during mild temperatures (early morning or late afternoon).
  • In a horizontal position rotate the bottle gently to evenly mix the predators in the carrying material.
  • To disperse, keep the bottle in the horizontal position and gently shake while rotating. You can release Orius directly on top of the plant canopy or on dry rockwool slabs or by using an application boxes hung on the plant.
  • In a commercial scale environment apply in groups of 75-100 to encourage mating and establish a population. For small scale or one pot application release atleast 7-10 orius per plant.
  • Avoid chemical pesticides (organic or synthetic) before and after release.
  • Avoid top watering or washing plants.

Can you store Orius Insidiosus?

Orius insidiosus should be released as soon as possible. Storing is not recommended but if necessary orius can be stored for 1 day in a cool (15-20C) dark environment. Lay the bottle horizontally and avoid any contact with direct sunlight.

How to check the quality of the predators?

During shipment Orius tends to huddle in the middle of the tube. If you don’t see any movement at first, allow the shipment to come to room temperature before conducting a quality check.

To check gently rotate bottle in a horizontal position. Pour a small sample on a white piece of paper and you will see Orius crawling from the pile.

How to promote establishment?

Temp and humidity: To promote breeding Orius should be released in temperatures of 24-27°C and relative humidity of 60% or more.

Environment: Orius is a diapausing insect and becomes inactive during shorter cooler days, we don't recommend using it during winter unless additional lighting is being used. It needs a minimum of 12-14 hours of light to stay active and breed.

Supplementary food: Bugfeed, pollen, Orius banker plant.

How to spot Orius after releasing?

Adult stage of Orius is black with cream markings on its body and the juvenile stages are orangish yellow. To spot after releasing tap the plants, especially flowers, over a white piece of paper to see the predator and monitor thrips.

How long till you see results and how often should you be reordering?

If the environment is optimal (abundant food, temp/humidity), you will newly hatched juvenile orius within 10-14 days. It may take longer if the temps are cool.

Reordering rate depends on the grow environment (greenhouse, grow tent, house plants etc) and the infestation level. If you are using Orius to control an established thrip infestation, it is generally recommended to release Orius weekly till thrip population starts to decline.

Frequently asked questions

Can I use sticky traps with Orius? Is Orius attracted to yellow or blue traps?

The traps are going to catch orius regardless of the color, research does indicate it prefers yellow over the blue. You can put up sticky traps a week after releasing orius, it'll still catch a few of them but nothing too significant to be an issue. 

I have some orange bugs in my bottle. What are they?

Those are the juvenile stages of Orius. They will turn black within a day or two.

I released Orius but it only lasted 7-9 days on my plants, what happened?

Orius naturally starts to die within 7-9 days as part of its life cycle. If it had enough food (pests or bug feed) during that time it will lay eggs and the life cycle will continue. Establishment is rare in indoor plants due to environmental factors.

 

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