Access detailed GIS data regarding Plant Hardiness Zones for Massachusetts, tailored for agriculture planning and environmental research. This dataset provides inherent insights into temperature resilience regions across the state, classifying them into zones such as 5a, 5b, and 6a, each designated by its specific temperature range like '-20 to -15 F' and '-15 to -10 F.' Professionals utilizing this dataset can enhance their planning accuracy for various flora suited to these specific climatic conditions. Evaluate this data on Massachusetts's hardiness zones to ensure optimal decision-making in agricultural development and environmental management.