Tony from Tucson, Az writes
Per the manufacturer, they do NOT recommend applying Zylam Liquid Systemic Insecticide in greenhouses or on orchids. It is to be used outdoors only in landscaped ornamentals. Please refer to the label by clicking the link below for more detailed information. http://www.domyownpestcontrol.com/msds/ZylamLiquid-SL.pdf We do carry Safari which is labeled for greenhouse use and for soft, brown scale. I do not see orchids specifically listed on the label but you can contact the manufacturer for usage information at Valent USA Corp 800.682.5368
Answer last updated on: 10/29/2013