How We Fed Ourselves

Paper 02 of 8 · Ka Lako ʻĀina · Hawaiʻi Island Food Resilience Initiative · June 2026. A joint program of Hawaii Farmers Union United (Big Island) and the Pure KNF Foundation. Initiative lead: Drake Weinert (president, HFUU Big Island; president, Pure KNF Foundation). Companion papers: 00 Executive Summary · 01 Threat Assessment ("The Thin Line of Ships") · 03 What We Have Now · 04 The Plan (Five Moves) · 05 Public Opinion Strategy · 06 The Free Economy.

The island's oldest book begins with the smallest living things. The Kumulipo — the creation chant composed around 1700 and translated by Queen Liliʻuokalani herself, from manuscripts her family kept — opens the world in darkness, before gods and before people:

Then began the slime which established the earth,

The source of deepest darkness. …

Kumulipo was born in the night, a male.

Poele was born in the night, a female.

A coral insect was born, from which was born perforated coral.

The earth worm was born, which gathered earth into mounds …

— Liliʻuokalani, An Account of the Creation of the World According to Hawaiian Tradition (1897), The First Era, pp. 1–2

Coral polyp and earthworm — the reef-builder and the soil-builder — are born before fish, bird, beast, or man, and the world is fed from the bottom up; man arrives last, into a world already built and provisioned. Hold that order. The people who engineered the field systems in this paper carried that text, and they farmed the way it begins the world: the small living things first.

Hawaiʻi Island once fed every person on it. Not adequately — abundantly, for centuries, without a single imported input. This is not folklore. It is measured archaeology, peer-reviewed and published, and the field walls are still on the ground in Kohala, Kona, Kaʻū, and Waipiʻo.

This paper tells that story straight: what the old systems actually produced, how the land and water were converted to export crops, what happened the two times the ships stopped, and what we inherited when the plantations died. The history matters because it settles the only question that matters — can this island feed itself? — with evidence instead of opinion. It already did.

1. The proof of concept

In 2019, researchers from Kamehameha Schools, UH Mānoa, and USGS published a spatial model of traditional Hawaiian agriculture in Nature Sustainability. Their finding: the islands' indigenous food systems — irrigated loʻi, intensive dryland fields, and valley-slope agroforestry, about 100,789 hectares (~250,000 acres) in all — could produce more than 1.02 million metric tons of food per year, enough to support a theoretical maximum of over 1.2 million people (Kurashima, Fortini & Ticktin 2019).

Three things make that number stronger, not weaker:

• It excludes protein. Fish, fishponds, pigs, and chickens — roughly 22% of the traditional diet — are not counted. Neither are home gardens (Kurashima et al. 2019).
• It is conservative. A restored pre-colonial dryland plot has since documented yields up to five times the values used in the model (Kurashima et al. 2019).
• It beats the present. The same paper measures today's system: about 369,583 hectares of active agricultural land producing 151,700 metric tons of local food — roughly 13% of what we eat (Kurashima et al. 2019). The old systems out-produced today's entire local food supply several times over, from less than a third of the land now zoned agricultural, with zero imports and zero fossil inputs.

How many people did it actually feed? Scholars disagree by method, and the honest answer is a range. Dye's radiocarbon-proxy work puts the archipelago at roughly 110,000–150,000 people in 1778, down from a pre-contact peak of 140,000–200,000 (Dye 1994). Stannard's epidemiological case argues for 800,000 or more (Stannard 1989). The Nature Sustainability model finds the land could have carried the high estimates (Kurashima et al. 2019). State it as the scholars do: hundreds of thousands of people across the archipelago, with Hawaiʻi Island carrying one of the largest shares — and not one shipload of food among them. For scale: Hawaiʻi County's resident population today is about 209,790 (State Data Center, 2024).

2. The engineered landscape

These were not scattered gardens. They were engineered agricultural systems, built and expanded over centuries by master farmers, and this island held the largest of them.

Two details deserve a close look.

The breadfruit math. In Kona's kaluʻulu belt — a strip 1.0–1.6 km wide — breadfruit alone produced an estimated 21,200–58,400 metric tons per year, supporting about 15 people per hectare, against roughly 3.6 for sweet potato (Lincoln & Ladefoged 2014). A planted tree that feeds people for generations, at four times the carrying capacity of a row crop. That caloric surplus is what underwrote the political power of Kona.

The Kohala walls. Tens of thousands of low stone-and-earth alignments, two to three feet high, run perpendicular to slope and wind across 60 square kilometers. They broke the wind, held moisture, and divided planting strips — and new ones were added, decade after decade, as population grew. On the population those fields fed, the published estimates span roughly 20,000 to 120,000, with no scholarly consensus; the careful statement is "tens of thousands" (Kirch et al. 2011). You can still see the grid from the air.

The crops were a deliberate portfolio: kalo in the wet valleys (the most reliable staple in the islands), ʻuala on the dry slopes — the famine-breaker; the proverb says "He ʻuala ka ʻai hoʻola koke i ka wī," the sweet potato is the food that ends famine quickly (MISC) — ʻulu as the tree staple, banana, yam, and sugarcane planted as working windbreaks.

And kalo was more than the most reliable staple. In the genealogy David Malo recorded, the first child of Wākea died at birth and was buried at the end of the house:

After a while from the child's body shot up a taro plant, the leaf of which was named lau-kapa-lili, quivering leaf; but the stem was given the name Haloa. After that another child was born to them, whom they called Haloa, from the stalk of the taro. He is the progenitor of all the peoples of the earth.

— Malo, Hawaiian Antiquities (1903), Ch. LX, p. 320

The kalo is the elder brother; the people are the younger line that carries his name — "the children born from Haloa, these are yourselves," as the Naua Society manuscripts put it (quoted in Beckwith, The Kumulipo, 1951, p. 119). A field system whose staple crop is the family's eldest sibling is a system that will be tended well. It was.

3. Fertility was made on-island

The plantation era would later run on imported fertilizer. The old system ran on knowledge.

Soil scientists working in the Kohala fields found the soils inside the abandoned system substantially richer in bases and phosphorus than soils just outside it — and found that the farmers had sited the system precisely where substrate age, rainfall, and temperature placed nutrients in the rooting zone (Vitousek et al. 2004, Science). Then they managed fertility actively: mulch, ash, green manure, and the sugarcane windbreaks cycling biomass back into the planting strips, season after season, inside the same land division.

Read that again as a farmer: site selection plus on-farm inputs, no purchased fertility, sustained for centuries at full production. This is the direct ancestor of the Korean Natural Farming case this initiative makes today — that fertility can be manufactured from local materials, on island, at scale. The University of Hawaiʻi's own extension literature says of KNF: "Virtually all of the inputs used in KNF… are available locally at a fraction of the cost of imported feeds, composts, and fertilizers" (UH CTAHR SA-21). The ancestors proved the principle on this exact ground. The methods are teachable now as they were then.

4. Distribution was solved structurally

Production was only half the old system's genius. The other half was the ahupuaʻa — the land division that ran mauka to makai, a wedge from mountain to sea. Each one stacked the full set of resource zones inside a single unit: upland forest for water and timber, the agricultural belt of loʻi and dryland gardens, and the shore with its reef, salt, and fishponds. A konohiki managed the whole — timing planting, allocating ʻauwai water, opening and closing fishing kapu — so that fertility, water, calories, and protein cycled inside one watershed.

In plain terms: every community lived inside its own supply chain. Food did not have to move far because everything a population needed was co-located by design. That is the original answer to the problem our Paper 04 names as the keystone — distribution — and it is why this initiative builds distributed hubs rather than a single centralized depot. The ahupuaʻa is not a museum piece. It is a working management architecture, and it is the template.

And once a year the old system ran island-scale logistics on top of the local design. In the Makahiki season, Lono's standard — the akua loa, the "long god" — made a full circuit of the island, district to district. Malo recorded both what the name meant and how the staging worked:

It was called Lono-makua (father Lono), also the akua loa. This name was given it because it made the circuit of the island.

— Malo, Hawaiian Antiquities (1903), Ch. XXXVI, pp. 189–190

The konohiki was expected to have all the taxes of the district collected beforehand and deposited at the border of the ahu-pua'a, where was built an altar.

— Malo, Ch. XXXVI, pp. 190–191

Fixed stations at every ahupuaʻa border, contributions staged in advance and scaled to the district, a known route, a fixed season. Production was local; circulation was islandwide; both were designed. When Paper 04 builds mobile distribution rails, it is restoring an office this island already invented.

5. Dependence was built, not drifted into

The island did not drift into importing nine-tenths of its food. Dependence was constructed — acre by acre, ditch by ditch — by converting food land and food water to export monoculture. The record is explicit:

The water went the same direction as the land. In 1910 the Hawaiian Irrigation Company opened the Lower Hāmākua Ditch — 24¾ miles of tunnel, lined ditch, and flume, engineered for a peak flow of about 61 million gallons a day — fed by the four streams in the back of Waipiʻo Valley (HAER, Library of Congress). Waipiʻo, the ancestral kalo valley that had fed thousands, became the intake gallery for cane. The Kohala Ditch (1906) did the same for Kohala Sugar. The island's best mountain water was captured at industrial scale for crops nobody here ate.

None of this happened in secret, and the exposure it created was understood at the time. The U.S. Naval Institute's Proceedings ran an article titled "Food — Hawaii's Vital Problem" in October 1940 — fourteen months before Pearl Harbor. The vulnerability was in print before the bombs.

6. The stress test: World War II

December 7, 1941 was, among everything else, a food-supply event. The Territory went under martial law the same day, and stayed under it for 2 years, 10 months, and 17 days — the only prolonged military government of a full U.S. territory in American history; the Supreme Court later ruled the military's trials of civilians unlawful (Duncan v. Kahanamoku, 1946).

The first inventory told the story the acreage tables predicted. The military found a 37-day supply of most staples, with serious shortages of potatoes, rice, and onions (U.S. Army Center of Military History). Feeding Oʻahu's civilians and the garrison required about 32,000 tons of food per month from the mainland, moved under naval escort; Congress hastily approved a $35 million revolving fund to finance the shipments, and the first emergency cargo loaded in San Francisco on December 20, 1941 (U.S. Army CMH).

And here is the part this paper exists to be honest about. With food riding a convoy lifeline, under full military authority, the land still did not go back to food. The Army's own history states it plainly:

"The effort to stimulate the production of food crops locally met with indifferent success, partly because the federal government decided that maximum production of sugar and pineapples was more important to the war effort." — Guarding the United States and Its Outposts, U.S. Army Center of Military History

Washington judged sugar and pineapple more valuable to the war than local vegetables, and the plantations kept their land, their water, and their labor. Hawaiʻi did not feed itself through the war. It was fed by escorted shipping and federal credit while its best ground stayed in export crops.

The people, meanwhile, did what people do: they planted. The University of Hawaiʻi ran a Victory Garden Committee with rolling gardening classes under Dr. Fred Armstrong; school and community gardens multiplied; even air-raid shelters in Honolulu sprouted lettuce (Images of Old Hawaiʻi). On this island, Waimea's agricultural acreage grew from 75 acres in 1939 to 518 by 1946 (Images of Old Hawaiʻi). That energy was real — it is the seed of the mobilization playbook in Paper 05 — but it was marginal against a 32,000-ton-per-month import requirement. Gardens carried morale; convoys carried the calories.

The lesson is not that crisis converts land to food. The lesson is that it doesn't — not automatically, not even under martial law. Nobody in Washington will order our land into food next time. That decision is ours, and it has to be made ahead of time.

7. The chokepoint proven: 1949

Five years after the war, a labor dispute demonstrated the same arithmetic without a single enemy in sight. On May 1, 1949, about 2,000 longshoremen struck for wage parity, and "shipping to and from the islands came to a virtual standstill" for roughly six months — 171 to 177 days by varying counts, May 1 to October 23 (UH West Oʻahu CLEAR).

By the cited account, late September found 500,000 tons of sugar undistributed, a $60 million deficit, food prices up 6%, and record joblessness (Global Nonviolent Action Database) — and note that the islands were never fully cut off, because the union itself kept unloading military cargo, food, medicine, and perishables. The Territory's response is the part to remember: a special legislative session passed a dock-seizure law on August 6, and by August 10 the government had seized the two largest stevedoring companies and was running the docks itself (Evening Star, Aug. 10, 1949, Library of Congress). A partial port stoppage drove the government to commandeer private companies inside fourteen weeks — because there was no other lever to pull.

And in 1949, the islands still had roughly a quarter-million acres of working farmland and a fishing fleet standing behind the docks. The state's own 2012 food-security strategy still names a dock strike as the canonical supply shock (OP-DBEDT Vol. II). Nothing about the one-artery arithmetic has improved since. What has changed is what stands behind it.

8. The collapse and the inheritance

Sugar did not give the land back to food. It just left.

On this island the closures ran for two decades: Kohala's last harvest in 1975; Puna Sugar announced its shutdown in January 1982; Hāmākua Sugar hauled its final cane through Honokaʻa on September 30, 1994 (Hāmākua Sugar Days); the Pepeʻekeo mill shut the same year; and Kaʻū took the island's last sugar harvest in March 1996 (PBS Hawaiʻi). At the Hāmākua bankruptcy auction, Kamehameha Schools/Bishop Estate bought the plantation lands — 30,500 acres, for a reported $21 million (Environment Hawaiʻi; HAER).

What replaced cane was mostly not food. More than 20,000 acres of Hāmākua land went under lease to industrial eucalyptus (Environment Hawaiʻi). Kaʻū fragmented into ranching, macadamia, and — the bright spot — Kaʻū coffee, planted by former plantation workers on cheap five-acre leases: proof that ex-plantation land can go to working small farms when tenure is real. The dependence numbers kept moving the same direction the whole time:

Two facts about where the record stands today. First, there has been no official measurement since 2010 — the state set a goal of doubling local food production by 2030, then the statistics program that would have measured it was defunded (Civil Beat, May 2025). We are navigating by a sixteen-year-old benchmark. Second, the assets did not vanish. This county still holds 604,184 acres in farms across 3,638 farms — 43% of the state's agricultural sales (USDA NASS 2022). The Lower Hāmākua Ditch, leased by the State in 1995 and operated for diversified agriculture ever since, still runs — a system engineered for ~61 million gallons a day now backing an island with just 5,644 irrigated acres (HAER; USDA NASS 2022). The pipes outlived the purpose. The capacity is real and underused.

9. What this history proves

Put the whole record on one page and the shape is unmistakable:

1. It was done here. This island fed a large population — for centuries, at quality — from engineered systems whose walls and terraces are still on the ground in Kohala, Kona, Kaʻū, and Waipiʻo. The carrying capacity is published science, not nostalgia (Kurashima et al. 2019).
2. Fertility and distribution — the two problems that decide everything — were both solved locally. Fertility was made on-island from local materials; distribution was designed out of existence by the ahupuaʻa. Both solutions are teachable today.
3. Dependence was a build-out, not a fate. It took specific acres (12,000 → 254,600 in sugar), specific water (Waipiʻo's streams into the cane ditch), and specific decisions (Washington keeping plantations in sugar through a world war) to make this island dependent. What was built can be built back — and the land, the water, and the producers are still here.
4. Crisis does not fix this automatically. WWII proved local production doesn't surge on its own; 1949 proved one closed artery puts the government into emergency seizure inside fourteen weeks. The conversion back to food is a decision made before the stress, or not at all.

The people who built the field systems were master farmers working this exact land, this exact rainfall, these exact soils. Their proof stands. The knowledge survives — in the archaeology, in the practitioners, in the kalo and ʻuala and ʻulu still growing here, and in natural-farming methods that put fertility-from-local-materials back into teachable form. Papers 03 and 04 take it from here: what we have now, and the five moves that build it back.

What you can do now

If you live here: plant ʻuala. One bed. It is the historical famine-breaker — quick calories on marginal land — and the first habit of a household that feeds itself. Then go stand in the Kohala field system or look down into Waipiʻo, and see the proof with your own eyes.

If you farm or ranch: your operation is the living continuation of this record. Join your district's Farmers Union chapter, or come to a Pure KNF Foundation workshop and learn to make your fertility program on-island, the way this island always did.

If you sit on a board, a pulpit, or a podium: use this history. It is the strongest answer to "it can't be done here" that any speaker in Hawaiʻi will ever hold — every number in it is sourced, and the evidence is carved into the land itself.