Winter-Greens, in general, don’t need water during winter even if they end up getting covered by snow. However, when they grow more actively, you would need to water them during fall and spring. Specific plots can thrive in winter, while some don’t. Winter-Greens can easily thrive during the coldest months, making them a sought-after food plot for deers as they look for something to eat and keep their bodies healthy throughout the winter. Also, Winter-Greens generally grow slowly during the coldest months compared to fall and spring. Therefore, watering them during such seasons would be best since they will likely establish fast even if temperatures are cool.