NatureMan's Indiana USDA Zone Map

This map is based on my own experience living in Indiana, and to make it easier for your landscaping decisions. The real map by the USDA has a bunch of averages bunched together. In many places it can be hard to tell which zone you are in. You may be on the border of 2 different zones and be very difficult to tell. I made my map more simplified so you can clearly tell which zone you are in. Remember, these are based on average coldest temperatures. You very well can get colder than these, but very rarely. So if you are in a zone 6a then on average your coldest temperature is between -5°F to -10°F. In a very rare cold spell you can still dip to -15°F or -20°F, but would likely be record cold and only happening once every several decades, or maybe not at all. The winters of 1985, and 1994 comes to mind. Indiana saw zone 3 and 4 winters in a solid zone 6. Only got that cold in these two winters (colder than -20°F) in nearly 150 years of weather recording.