When to Plant in Peoria, IL

In Peoria, Illinois, gardeners rely on the median last spring frost date of April 23 and the first fall frost approximately on October 12, granting the area about 172 frost-free days each year. These dates form the backbone of a planting calendar that allows for a productive growing season, facilitating a diverse range of crops that flourish in this local environment.

The microclimate in Peoria is classified as humid continental (4 distinct seasons), which means that the region experiences four distinct climatic phases. This climate is favorable for growing crops such as tomatoes, peppers, and beans, which thrive under the warm summers and provide robust harvests. However, cool-season crops like spinach and lettuce may struggle toward the heat of summer, as prolonged warmth can cause them to bolt or become bitter.

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