6 month old ladies? Any pix?
Mason jars work great. As Mr. Clandestine said, just make sure to open daily for a few minutes to let fresh air in and let the stale, damp air out. I usually open my jar and hold it in front of my fan for a minute or so to circulate the air.
Always check for mold, as this is a bad thing that can happen when you either put the buds in the jar too damp, or if you forget to open the jar daily.