Specific strain varieties for ohn ingredients
The answer
From the KNF library
The book names species for the three dry herbs: gigantic angelica root (Angelica gigans), cinnamon bark and licorice root (Glycyrrhiza glabra). (Cho, Recipe, p. 24)
The library describes OHN as a mix of herbs with a common function, aiding digestion and fighting pathogens. It is not a fixed ingredient list. (Office Hours Jan 2026, 24:21)
When you cannot match the book, Drake says to follow the book while gradually testing local substitutes. (Office Hours Ep. 15, 50:27)
Check the form of what you bought. Powders are too hard to sieve and turn into sludge, so use chipped or fresh bark instead. (Office Hours Ep. 11, 50:35)
The library does not say how much a species swap changes the result.
Sources
- 24:21 Office Hours (Jan 2026) — Colorado Potato Beetle IPM, OHN for Digestion, Free RTK GPS · “OHN (Oriental Herbal Nutrient) is a mix of herbs whose common function is aiding digestion and fighting pathogens, not a fixed ingredient list.”
- 50:27 Office Hours Ep. 15 (Jan 2022) — Cannabis KNF, IMO4 Winter Storage, FAA Without IMO4 · “Drake says follow the book while gradually testing local substitutes.”
- 50:35 Office Hours Ep. 11 (Nov 2021) — Fish Amino Acid vs Hydrolysate, IMO Heat, Seed Soak Storage · “No, powders are too hard to sieve and turn into sludge, so use chipped or fresh bark instead.”
- p. 24 Cho, Recipe · “gigantic angelica root (Angelica gigans), Cinnamon bark, Licorice root (Glycyrrhiza glabra), garlic, ginger”
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