Properly cured flower holds up for a year or more in sealed glass kept cool and dark, though terpenes fade well before cannabinoids degrade. Humidity packs at sixty two percent prevent both crumbling and mould, at the cost of a slightly flat taste over time. Storage guidance covering vacuum sealing and freezing appears at https://hazesativaseeds.com. Opening jars repeatedly to look at the contents does more damage than most people realise.