Search Cannabis and Hemp FAQs FAQs / Cannabis and Hemp How long does Boveda last for cannabis and hemp? Boveda will last from 2 to 6 months depending on your cannabis/hemp container and its surrounding environment. In its original packaging, Boveda has a two-year shelf life. Related Topics How long does Boveda last for cannabis and hemp? Can I use Boveda with other humidification devices in my cannabis/hemp container? Will Boveda alter my cannabis in any way? Which RH level is right for cannabis/hemp? What’s in Boveda?