Greenhouse Pest Control

Greenhouse pest control differs from household pest control in that you have an entirely enclosed environment in which to work. Certain chemicals that are not labelled for home use are appropriate for greenhouse use.

In our greenhouse situation, which is different than what a typical crop grower has, we have devised a system that works for us. Since we have a huge mix of plant species which are here for a limited amount of time, a "one shot" type of control is not feasible. With the constant influx of new plants and distribution of others, a biological control regimen is also out of the question.

In our situation, we use several types of pest control that are rotated often to discourage resistance. We treat plants for specific pests on a weekly basis and more often as needed. Although we are certified, of the chemicals we use, 95% are unrestricted. There are a few chemicals in our arsenal that are restricted but are used very sparingly. Some of the chemicals we use can be mixed together in the tank, others can't. For information, you need to read the labels of the particular materials you choose to use.

First line of defense: Inspection. We inspect every shipment that comes into the loading dock. Any plants that are questionable are quarantined and treated as early as possible. This early diagnosis will avert any long-term problems. Ongoing inspection also catches potential infestations in the earliest stages when they are most easily controlled.

Sanitation: Many visitors to our greenhouses remark at their cleanliness. We keep everything as clean as possible. Plant cleanings and debris are swept up and removed. Floors and walls are periodically scrubbed and exterior areas around and near the greenhouses are mowed and kept free of weeds and debris. Diseased plants are examined and destroyed. Any unusual plant symptoms are investigated early.

Equipment: We use both a high-volume sprayer and an electrostatic sprayer. The electrostatic sprayer, though more expensive, is highly effective. It provides better coverage by electrically charging particles in the aerosol that cling to the plants. With either device, the plant must be completely drenched (especially the undersides of the leaves) with the solution in order to thoroughly kill the insects.

Click here for article on pest identification.

Specific pests and controls we use: