All Lacrosse Associations have their own schedule, and you can find more and more year round Lacrosse happening all the time, but traditionally Woman's Lacrosse follows the same basic seasons as Men's lacrosse. Field Lacrosse is played in late Winter and through the spring (January-June) Indoor Lacrosse/Box lacrosse is played in the summer and into the Fall. (June - November)
Of course the exception is the MLL which plays after the traditional field season.