Why is spring the best time to collect sap?

Spring is the best time to collect sap because the temperature fluctuations between warm days and cold nights create the ideal conditions for sap flow in sugar maple trees. During these transitions, trees begin to thaw and draw up water, which mixes with the stored starches, resulting in the sweet sap that can be harvested. This process typically occurs from late winter to early spring, making it the prime season for maple syrup production. Additionally, the sap's sugar content is highest during this time, ensuring a better yield.