A big city usually has a population of at least 200,000 and you can often fly into a major airport. If you need to book a flight, search for the nearest airport to Prague, Czech Republic. 1  119 km to Dresden, Germany.  139 km to Chemnitz, Germany.
If sweet corn seeds are placed in soil that is cool and wet, the seeds have a greatly reduced chance of germination. Any that do sprout will almost certainly exhibit stunted growth. This heat-loving plant prefers air temperatures between 70 and 95 degrees Fahrenheit.f sweet corn seeds are placed in soil that is cool and wet, the seeds have a greatly reduced chance of germination. Any that do sprout will almost certainly exhibit stunted growth. This heat-loving plant prefers air temperatures between 70 and 95 degrees Fahrenheit.
Ground Temperature. The best time to plant your corn seeds is when the soil temperature reaches an average of 50 degrees Fahrenheit. You can determine the average ground temperature in your garden using a soil thermometer -- available at most garden stores.