plant species including weeds, fruits, vegetables and ornamental crops. Of these, the most severely affected include tomatoes, lettuce, pepper and peppermint as well as most all ornamentals. Symptoms of infection include a downward curling of the leaves, leaf tip dieback, stunting, necrosis of growing leaf tips, sunken ‘chicken pox-like’ spots on leaves (often with a surrounding halo), stem death and yellowing. Since these symptoms are so generic, extreme caution must be taken when introducing new plants to your greenhouse. Infected plants can not be cured and not all hosts display visible symptoms Western Flower Thrips are extremely hard to remove from their host plants, as they often dig themselves deep into blossoms, buds and other areas hard to reach with insecticides. So, even if plants are sprayed regularly with insecticide, INSV and other insect vectored viruses can not always be ruled out when forming diagnosis. Temperature and host both play an important factor when discussing the symptoms which an INSV infected plant will display. When New Guinea Impatiens are cultivated in an environment varying between 75 and 80 degrees Fahrenheit the host plant will be highly symptomatic. However, when New Guinea Impatiens are grown in an environment just 10 degrees cooler it is unlikely for there to be any observable symptoms of disease. Environment INSV is a virus and relies on vector transmission in order to infect and spread to new hosts. This is achieved by insects called Western Flower Thrips. Western Flower Thrips are native to the western half of North America and are widespread within this natural domain. They are especially prevalent in warmer areas of the mountain west and pose the most notable threat to the popular apple cultivars of the region such as "Granny Smith" and "Ginger Golds." Apple cultivars will show great signs of cosmetic damage including large, dark halos with a central russet. These cosmetic wounds are known as "pansy spots." They are sites where a female has oviposited into developing flower buds or fruitlets. Despite the cosmetic damage suffered by these light skinned apple cultivars they are seemingly unaffected by most thrip vectored viruses. Infested apples of the mountain west simply provide a natural setting for Western Flower Thrips to thrive and reproduce. Due to the large natural environment and hundreds of hosts Vector transmission allows the virus a range limited only by the reach of the insect. (3) Greenhouses provide ideal environments