8 March What is the "Heat Island Effect"? March 8, 2017 By Greenhouse Ambassador Weather 0 The heat is trapped in the city by sidewalks, buildings, roads, and houses. In St. Louis, the city is 15 degrees hotter than in the county at night. This is because the heat that has been trapped during the day is finally able to escape. The picture below shows an example of the heat island effect. . Related Posts Rainbow Plants How tall will they grow, what is the difference in height, are some of the questions we have about plants grown in store bought soil, and in the gravel of our aquaponics system. Sandy-Loam VS Miracle-Grow, Basil Conquers All Comparing/ contrasting two types of soil. (Miracle Grow and Sandy-Loam) We saw that Sandy-Loam was decent. Miracle Grow dried out too quickly. --- So this is only a small portion on the soils. there are many types of soil in this expirment. the types are sandy loam, clay sand and loam, compost and clay,and clay loam and compost. along with the maricel grow which in this case is the control. now that you ,the reader, know what the soils are no it is time to explain how well they grew plants.sandy loam was the best in this case. next up was compost and clay third was loam and clay and finally was sand loam and clay. EcoBattle Two trays, one gravel and one soil; which tray has the best plants? Which tray will be the champion? To find out read more. Welcome to the Ambassadors Program Introduction to the Greenhouse Venture - Ambassadors program. Comments are closed.