Based on scientific research and USDA PPQ research support, we are providing a free app version of the Boxwood Blight model at http://uspest.org/risk/models?mdl=bxwd_s . This is a first or pre-release version that we will test with a select audience of scientists and potential users of the app. To use the app, you will need a weather station code that you can pick after entering a place name or zip code. You can also change the start date and span of days (both optional). If a forecast is available, then using the default start date should include a 5 to 7 day forecast of blight risk. Generally it must be raining and of moderate temperatures for infection risk to be high. Also you must have a source of the disease present nearby (and a susceptible variety including "English" and several other varieties of boxwood) for infection to occur. The model output gives you a choice of a graph and a table, both with color-coded risk levels and descriptive labels for risk. No particular fungicide recommendations are being made at this time; that is entirely your call. Use at your own risk. Developed at Oregon State University IPPC by the people who bring you the "http://uspest.org/wea" website.