Storing IMO 3
When stored IMO 3 (stored in cedar chest) freezes in our Canadian weather is it still good to use next spring?
Top answer
It should be alright. Freezing conditions may reduce the potency add more KNF preps when it is time to use
From the KNF library
From the KNF library
Drafted by Claude from Office Hours and the books
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Sep 2026
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3 sources
Drake says to avoid extreme exposure, but IMO4 in spore form holds up to freezing if it is fed food, minerals, and humic-fulvic acids before spring use. (Office Hours Ep. 15, 46:33)
That advice is for IMO4. The library says nothing about frozen IMO3 in particular.
- One viewer's 3-year-old collections, kept in a cool basement in totes with breathable lids, still made good piles. (Office Hours Ep. 113, 46:13)
- On the cedar chest, the library warns that some cedar species are antimicrobial and toxic, so check the tree first. (Office Hours Ep. 102, 28:36)
The library does not say whether a frozen IMO3 batch is still good, or how to test it.
Sources
- 46:33 Office Hours Ep. 15 (Jan 2022) — Cannabis KNF, IMO4 Winter Storage, FAA Without IMO4 · “Drake says avoid extreme exposure, but IMO4 in spore form holds up to freezing if it's fed food, minerals, and humic-fulvic acids before spring use.”
- 28:36 Office Hours Ep. 102 (Nov 2023) — SIMO, PIMO, AIMO: New IMO Names, Moisture Ratios, Box Material · “some cedar species are antimicrobial and toxic, so check the tree first”
- 46:13 Office Hours Ep. 113 (Feb 2024) — Substituting Grains in IMO, JADAM Pest Kit, Seed IMO Timing · “A viewer's 3-year-old collections still make good piles, stored in a cool basement in totes with breathable lids.”
