Illinois Palm Trees

You can give palm tree growing a shot in zone 7a, especially near the Kentucky border where the climate leans closer to humid subtropical. Illinois, however, is more on the temperate side.

Summers here get hot and humid, with average temperatures ranging from 70°F (21°C) to 77°F (25°C), while winters can be cool to downright cold, averaging between 22°F (–6°C) and 37°F (3°C). Illinois USDA hardiness zones cover the range from 5a to 7a.

The temperature extremes in Illinois have hit 117°F (47°C) at the high end and a bone-chilling –36°F (–37.8°C) at the low end. Throughout the year, expect your fair share of thunderstorms and around 37 inches of snowfall. And yes, the state does face the threat of tornadoes.

Growing Palm Trees in Illinois

But let’s be clear, Illinois isn’t exactly a paradise for palm trees. Your best bet would be to give it a shot in the zone 7 area near Cape Girardeau City.

However, bear in mind that just one extremely cold day can spell doom for your palms. If you sense a cold snap approaching, make sure to provide your trees with some much-needed protection.

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Major Cities in Illinois

Arlington Heights – Hardiness Zone 5a
Aurora – Hardiness Zone 5a
Chicago – Hardiness Zone 5b
Decatur – Hardiness Zone 5a
Elgin – Hardiness Zone 5a
Naperville – Hardiness Zone 5a
Peoria – Hardiness Zone 5a
Quincy – Hardiness Zone 5b
Rockford – Hardiness Zone 5a
Springfield – Hardiness Zone 5b