Scaling up garlic: what breaks first

Short answer: four things break as garlic acreage grows, and they break in order. Planting labour goes first, usually between one and three acres. Harvest goes second. Curing space goes third and is the one nobody plans for. Grading and packing goes fourth. Solving them out of order is how growers end up with a crop rotting in a shed.

Garlic scales badly for a specific reason: almost every operation is per-clove or per-bulb. Field work like tillage, spraying and mulching scales roughly with area, so doubling acreage costs about double. Planting, lifting, trimming and grading scale with the number of bulbs, and none of them get cheaper per unit at any size until you change the method entirely.

Where the walls are

At the common 6″ × 6″ spacing, an acre is 174,240 cloves. That number does most of the explaining on this page.

Acres	Cloves at 6″ × 6″
1	174,240
3	522,720
5	871,200
10	1,742,400

Every one of those has to be picked up and placed root-down in October, then lifted, trimmed and graded the following summer. Ten acres is not ten times harder than one acre in a linear-feeling way. It is 1.74 million individual handlings, four times over.

Wall one: planting labour

This is the wall almost everyone hits first, and it hits inside a two-to-four week window in October when the rest of the farm is also demanding attention.

Hand-planting rates vary enormously depending on whether you are counting furrow opening, placement and covering, or just dropping cloves into an open trench. Doug’s figure for the whole job is about 300 cloves per person per hour, and the honest figure for your farm is the one you measure yourself, over the whole job and the whole day.

Whatever that figure is, the totals get heavy fast. Five acres at 6″ × 6″ is 871,200 cloves placed by hand inside a few weeks of October. Divide that by your crew’s rate and by the working days you actually get, and for most growers the answer is a crew of six or more, working full eight-hour days, in cold soil, on their knees.

The binding constraint is rarely the wage bill. It is that those people do not exist in most townships in October at any price, and the ones who do exist do not come back the following year.

A ride-on planter changes the shape of that problem. Two people ride the PL-22, each placing 600 to 800 cloves an hour, and a third drives the tractor, so the machine plants 1,200 to 1,600 an hour with a crew of three. That is three people instead of a field crew of six or more, the two placing cloves are seated so the rate holds at four in the afternoon, and every clove goes in root-down.

On labour-hours, take one acre at 8″ × 8″: 98,010 cloves, about 70 running hours on the machine, or 210 labour-hours with all three people counted. The planter comes out ahead on labour whenever a hand crew plants fewer than about 470 cloves per person per hour, counting the whole job — making the row, setting each clove root-down and covering it.

Now do the calendar arithmetic honestly, because this is where scaling gets real:

Acres	Cloves at 6″ × 6″	Hours for one machine at 1,400/hr	Eight-hour days
1	174,240	124	16
3	522,720	373	47
5	871,200	622	78
10	1,742,400	1,244	156

Sixteen days for an acre fits an October. Forty-seven days for three acres does not.

So above roughly two or three acres at close spacing, plan for more than one machine or more than one shift. The realistic levers are running more than one machine, running longer days with rotating riders, or opening your spacing — at 8″ × 8″ an acre is 98,010 cloves, which is 70 machine-hours instead of 124. Most growers use some of all three. The PL-22 is built for growers from under an acre up to roughly twenty acres. Past twenty to thirty acres the question becomes how many machines and riders you can run at once, which is the scale at which some growers move to a fully automated planter and accept the orientation loss that comes with it.

At the small end, an acre or less, the machine earns its place for reasons that have little to do with scale: riders sit instead of kneeling and hold their rate through the afternoon, every clove goes in root-end down, you are not hunting for a big crew in October, and the same frame carries the undercutter at harvest. It is built to your own beds and row spacing, and when you add acreage later, you add it on the same machine. The hand-planting comparison works through the one-acre arithmetic and the cost calculator runs it at your own crew’s rate.

Wall two: harvest

Harvest breaks second, usually around the same acreage, and it breaks in two separate places.

Getting bulbs out of the ground. Pulling puts all the force through the neck. In light sand plants often come clean; in anything firmer a share of the crop snaps off and stays in the ground, and what does come out is bruised in ways you find in November. A blade run under the bed loosens the root mass so plants lift with almost no force. This is the cheapest wall to solve, because it is one tractor pass per bed rather than per-bulb work — the UC-36 and UC-48 run 6–8″ below the bulb and need at least 40 HP, and they mount to the PL-22 frame in place of the planting wheels.

Moving bulbs from the field to the curing space. This is per-bulb and it does not mechanise on a small farm. Ten acres is a lot of totes, a lot of trips, and a wagon you probably do not own yet. Budget for handling, not just for lifting.

Wall three: curing space — the one people forget

Here is the wall that surprises growers, because it is invisible until the day the crop comes out of the ground.

Garlic cures in a single layer or hung, in shade, with air moving across every bulb. It cannot be piled. That means your curing capacity is a surface area problem, and surface area scales exactly with bulb count.

Work out your own number before you plant the extra acres:

1. Take your actual yield per acre in bulbs — count a measured length of row from last year, do not guess.
2. Count how many bulbs your racking holds per square foot of surface, single layer with air between them.
3. Divide.

As an illustration only, with an assumed 12 bulbs per square foot of rack, one acre at 6″ × 6″ needs on the order of 14,000 square feet of curing surface. On five-tier racking that is still a couple of thousand square feet of floor — per acre. Your own numbers will differ, and that is the point: run them.

This is why growers end up with twelve thousand pounds of garlic and nowhere to hang it. Planting capacity can be bought in a fortnight; curing space is a building. If you are planning to double your acreage, sort the curing space out in the winter before you plant, not in the July after. What good and bad curing looks like is in curing and storing garlic.

And to be blunt: we do not sell anything that helps here. No machine on this site cures garlic. It is racks, shade, fans and floor space, and it is the wall we cannot help you with.

Wall four: grading, trimming and packing

The last wall is per-bulb again, and it arrives in August when the crop is cured. Every bulb gets its neck and roots trimmed, gets brushed off, gets sized, and gets sorted into seed, market grade and culls.

It is slower than people expect and it competes with market days. Growers usually solve it with a longer season of part-time labour rather than equipment, because a bulb destined for a farmers’ market table has to be handled by a person anyway.

Grading is also where your next crop is decided, since your seed comes out of this pass — see choosing seed garlic.

The order matters

If you take one thing from this page: solve the walls in the order they arrive, and plan your curing space alongside your planting and harvest capacity.

Ten acres in the ground needs curing space for ten acres. The most expensive scaling mistake in garlic is successfully planting a crop you cannot cure — so when you add acres, add the racking for them in the same winter.