Answer: The answer to your question depends on what you are planting. Most seeds have a fairly wide range of temperatures within which they will germinate sooner or later, but there is usually a narrower "optimum" range. For instance, tomatoes and peppers really prefer a warm soil near 80 degrees for quick germination. That is one of the reasons why they are usually set out as transplants. Other seeds may require a cooler soil. Usually, following the planting suggestions in relation to the average frost date such as a month before the last frost or ten days after the last frost allows for the soil to be within the acceptable range.
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