There is just not much good one can say about thrips. They attack ornamental landscape plants, spread viruses, and simply make the foliage ugly and your plant sicker than it was. Many pests “move in” and make themselves at home when the health of a plant is poor. Thrips are no exception. In fact, they are most likely to attack a plant that is too dried out-especially if the foliage is dirty.
Thrips are microscopic and look like elongated black flies. They may be tiny, but the damage that they cause is not. And that damage is quite characteristic, and easily identified. The foliage becomes silvery or bronze and stippled, because thrips are both chewers and suckers. There can be a blackish deposit from their presence, and often the plant will develop sooty mold as well.
The natural predators to thrips include parasitoid wasps, soldier beetles, and green lacewings and their larvae. Spraying with insecticidal soaps can also help. If their presence is minimal, cut, remove, and destroy the infested foliage.
In severe cases, other insecticides can be used to treat an infected plant. Talk to one of our salespeople to determine not only the right product but also the right time in the season for treatment.
Remember-during hot, dry weather, one of your best protections is to make sure your plants have the appropriate amount of water and fertilizers to keep them healthy.