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US (MA): More insects spotted in the greenhouse

Based on greenhouse monitoring in the past week, UMass Extension's Greenhouse Crops and Floriculture Team with Jim Mussoni, Private IPM Scout, report the following:

  • Twospotted spider mites (TSM) were detected on Mandevilla.  This plant, which is considered tropical, is a favorite of TSM and Mandevilla are commonly infested upon arrival. Therefore, as noted in a recent message, it is prudent to inspect them along with all other incoming plant material before bringing them into the greenhouse and into the proximity of other plants. A little extra effort up front can help to prevent big headaches later.  More information about twospotted spider mite
  • Whitefly was detected on Vinca vine. More information about whiteflies
  • Western Flower Thrips (WFT) were detected on Dracaena, commonly known as spikes. This grassy-looking plant is a favorite for thrips, and they are often infested before other less desirable plants. If monitoring for thrips using yellow sticky cards, it can be very informative to place one in Dracaena. More information about Western flower thrips
  • Green peach aphids are spreading and have been found on Fuchsia, Calibrachoa, yellow sweet potato vine, peppers, eggplants and tomatoes. See our most recent update for notes on biological control of green peach aphids. More information about aphids
  • Fungus gnat and shore fly populations continue to be low. More information about fungus gnats and shore flies
  • Powdery mildew was detected on greenhouse tomatoes.

Source: University of Massachusetts Amherst


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