On October 16, 2019, Tracy Wooten and Valann Budischak came to my class lecture us about the Green Industry in Delaware. When I hear green, I thought it is just about the plants. But I was wrong. It is more interesting than I though. Green industry includes that nursery business, landscape design and maintenance, land management and so on. It is similar with other industries that many people play different roles. It has producers, landscapers, land managers, golf courses suppliers and others. Horticultural Product Sales is a big part of green industry in Delaware. It creates over 21.7 million dollars sales. When Ms. Wootten and Ms. Budischak showed us a picture of railroad landscape, professor Issacs raised a question that why weed is not allowed to grow on the railroad. It is because the train will pass through with high speed and produce elevated temperature in the surface of rail which will cause fire hazard when weed is growing in there. To sum up, I learned some interesting information about green industry.