March 2026 — Medicine (Oriental Herbal Nutrient)

The Hilo KNF Monthly Meeting is a free, community-driven gathering held on the second Tuesday of every month at the Komohana Research and Extension Center. Each session focuses on one of Master Cho’s nine core solutions of Korean Natural Farming, with hands-on demonstrations, tastings, and potluck dinner.

March’s meeting dove into medicine — the five-herb extract that sits at the heart of Pure KNF plant protection. Where food builds mass and cleanser flushes and flexes, medicine activates the immune system: it tells the plant to defend itself, wakes up the microbial community in the soil, and fills the air around treated plants with aromatic compounds that pests find deeply unpleasant. Drake walked the group through the herb selection philosophy, the simple extraction process, and led a tasting of finished batches from attendees who had made it at home.

TL;DR: Medicine = 5 aromatic/medicinal herbs + equal weight brown sugar, extracted 7–14 days in a dark place. Strain and store in dark glass. Dilute 1:1000 for foliar spray. Apply in the early morning or evening. The same preparation works on plants, soil, animals, and people.

What Medicine Does

Medicine works on three levels simultaneously — and understanding all three changes how you think about plant protection.

Pest repellent. The aromatic compounds in medicinal herbs — allicin from garlic, gingerols from ginger, glycyrrhizin from licorice — are biologically active volatiles. When you spray diluted medicine on your plants, these compounds coat the leaf surface and off-gas into the surrounding air. Most soft-bodied insects and many pathogens find these aromatic compounds repellent. You’re not killing anything; you’re making the plant a less hospitable place to land.

Immune stimulant. Plants have an immune system, and like any immune system, it can be primed. The bioactive compounds in medicine — particularly the phenolics and alkaloids from herbs like angelica and licorice — trigger the plant’s systemic acquired resistance (SAR) pathways. The plant upregulates its own defensive chemistry in response. You’re not adding protection from the outside; you’re waking up the plant’s ability to protect itself.

Microbe activator. The aromatic and antimicrobial compounds in medicine aren’t equally harmful to all microorganisms. Beneficial soil bacteria and fungi that have co-evolved with plants are largely unaffected — and many are actually stimulated. Regular medicine applications shift the microbial community in the soil and on leaf surfaces toward the beneficial organisms that suppress disease and support plant health. It’s ecosystem management at the microscopic level.

The Five Herbs

Master Cho’s original medicine recipe calls for five medicinal herbs with strong aromatic and therapeutic properties. The classic five are garlic, ginger, licorice root, angelica root, and a fifth herb chosen for the specific farm and growing context — often cinnamon, mugwort, or a locally abundant medicinal plant.

The herb selection philosophy matters more than any specific list. You’re looking for plants that are:

• Aromatic — pungent volatile compounds that repel pests
• Medicinal — used by humans and animals for immune support, digestion, or antimicrobial properties
• Locally abundant — the more your medicine is made from plants adapted to your land and climate, the more relevant its chemistry will be to the pests and pathogens you’re actually dealing with

In Hawaiʻi, this opens the door to powerfully local preparations. Noni, ōlena (turmeric), mamaki, and ʻawa are all candidates. The principle is that medicine made from the plants of your place carries information specific to your place. Drake encouraged the group to experiment: make your classic five-herb batch, but also try a local variant and compare.

Garlic is the non-negotiable anchor. Allicin — the compound released when garlic cells are crushed — is one of the most potent natural antimicrobials known. Every medicine batch starts with garlic.

Making and Using Medicine

The extraction process is simple, but the details matter.

Preparation: Gather your five herbs fresh. Chop or crush them finely to maximize surface area — the goal is to break cell walls and release the aromatic compounds into contact with the extracting medium. Weigh the chopped herbs.

Sugar extraction: Layer the chopped herbs in a clean glass jar, alternating with an equal weight of brown sugar. Brown sugar is preferred over white — it retains more mineral complexity and feeds a broader range of beneficial microorganisms during the extraction. Pack the jar about two-thirds full, leaving headspace for expansion.

Cover and wait: Cover the jar with a breathable lid (cloth secured with a rubber band) and store in a dark, room-temperature location. Within 24–48 hours, the sugar will begin drawing liquid out of the plant material through osmosis. After 7–14 days, you’ll have a richly aromatic, dark liquid loaded with bioactive plant compounds.

Strain and store: Strain out the spent plant material and store the liquid in dark glass bottles. Medicine keeps for years when stored properly — the high sugar concentration inhibits spoilage. Label with the herbs used and the date.

Application: Dilute 1:1000 with water for foliar spray (1 mL medicine per liter of water). Apply in early morning or evening when stomata are open and UV degradation is minimal. For soil application, use the same dilution and water in around the root zone. For animals and humans, traditional use suggests even more dilute preparations — but that’s a conversation for another evening.

The group made a batch together, layering garlic, ginger, licorice root, angelica, and a generous handful of noni leaves with brown sugar. Drake reminded everyone: make the homework, bring it back, taste it. The confidence that comes from holding a finished jar of your own medicine is something no video can replace.

The Hilo KNF monthly meetings are held at the Komohana Research and Extension Center, 875 Komohana St, Hilo. All are welcome — bring a dish to share and your curiosity about Korean Natural Farming.

Next Month: Structure — April 14, 2026