Perilla is a herb grown in poly-houses by mainly Vietnamese growers. It is a member of the mint family, Lamiaceae.
Under polyhouse conditions Perilla can grow up to a height of 60–80 cm.
The crop is harvested before flowering for its leaves. A crop is generally cut few times allowing the plants to regrow, before ploughing in and replanting.
The only pest encountered in Perilla crops that is causing serious damage is two-spotted mite (TSM), Tetranychus urticae Koch.
Feeding by all stages of the mite from the under surface of the leaves can cause white or greyish spots on the leaves making most of the leaves unmarketable.
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