MICROGREEN BUSINESS GUIDE · DUPO, IL

Start a microgreen business in Dupo, IL.

Most Dupo residents do not realize that the St. Louis metro restaurant market sits just across the river. This small St. Clair County village is part of the Metro East, the Illinois side of greater St. Louis, with Columbia, East St. Louis, and the bridges into the city all within a short drive. Those kitchens want microgreens cut that morning, not shipped in flat from a regional warehouse. For a grower in Dupo, that freshness window is the whole opportunity.

Quick Answer

You can start a microgreen business in Dupo with under $400 in initial equipment and grow it into a $1,200 to $2,800 per month side income within 90 days. Here is the local demand picture, the unit economics at Dupo wholesale prices, and the operating system used by working microgreen farms.

*When you think about the size of the St. Louis dining scene just across the river, how many of those kitchens do you suppose are settling for microgreens trucked in days old?*

What Dupo buys today

Restaurants give Dupo access to a genuinely large market. The Metro East kitchens in Columbia and across St. Clair County, plus the entire St. Louis dining scene just over the bridges, mean a steady pool of chefs who pay $25 to $40 per pound for microgreens delivered alive. A grower based in Dupo is close enough to serve the Illinois suburbs on a tight route while still reaching into the city for higher-volume accounts.

Farmers markets and direct retail are the second stream. Metro East markets and independent grocers draw shoppers who want fresh and local food, and microgreens stands stay uncommon, so you rarely compete on price. A weekly table of sunflower, pea, and radish shoots builds a repeat following, and those buyers often grow into standing weekly orders.

The indoor-climate angle keeps your supply steady year-round. Metro East winters still shut down outdoor growing for months, but microgreens grow indoors under lights regardless of the weather. While local field produce thins out in the cold season, you keep harvesting fresh trays every week, which is exactly when St. Louis-area chefs and shoppers will pay the most for fresh greens.

*If a Columbia or Metro East chef could get living trays cut the same week from someone right in Dupo, what would that be worth compared to a warehouse delivery?*

The math, in Dupo prices

Microgreens move at roughly $25 to $40 per pound wholesale into Metro East and St. Louis kitchens, and one 10 by 20 tray yields well over a pound of cut greens.

Startup cost

$400

Trays, soil, seed, lights. Used gear cuts this in half.

Per-tray net

$20-$30

After seed, soil, packaging, delivery.

Trays per week

100

Target for $3K-$5K/mo at Dupo pricing.

Break-even week

Week 4

First positive cash week. Most growers hit it.

What that looks like in Dupo square footage

A 10 by 10 foot room with basic shelving in Dupo can hold enough trays to supply several Metro East restaurants and a weekend market stand at the same time.

*Have you noticed how few growers are supplying the Illinois side of the metro directly, and what that open territory could mean for you?*

Three things every working microgreen farm in Dupo runs on

  1. A seed density and watering plan you trust. The number one cause of failed trays for new growers is over- or under-seeding. The cheat sheet inside Grown Like A Pro gives you grams per 10x20, soak hours, blackout days, harvest day, and watering for sixty-one varieties.
  2. A rotation tracker. Once you are running thirty-plus trays per week, you cannot remember what is in blackout, what is in light growth, what harvests Tuesday. A spreadsheet works for the first month. After that you need a system that pings you the day before each harvest and reorders seed before you run out.
  3. A customer + invoice layer. Restaurants in Dupo want predictable weekly invoices and net-15 terms. Farmers market customers want clamshell tracking. Both want consistency. The app handles both.

The IKEA test

If you can follow an IKEA instruction sheet without screaming at the family, you can grow microgreens at a commercial level in Dupo. The steps are about that difficulty: open the box, lay out the parts, follow the picture, repeat. Trays are the bookcase. Seed is the dowels.

If you ever did struggle with the IKEA bookshelf, that is exactly why Glappy lives inside the app. Glappy is the in-app coach that breaks every step down barney style, in your own language, from "how do I plant my first tray" to "why is this tray going leggy at day five and what do I do about it tonight." Type the question, get a step-by-step answer. There is no question too basic. The whole point is that a Dupo grower starting today is not on their own.

What you are not buying

You are not buying a course. You are not buying a hype product. You are not buying seed from us, and you are not buying trays from us. We do not sell either. Grown Like A Pro is the operating system you run your Dupo farm on. The growing happens in your basement.

Try Grown Like A Pro free for 30 days →

Dupo microgreen FAQ

How much can I make growing microgreens in Dupo?
A working microgreen farm in Dupo produces $3,000 to $8,000 per month within 90 days of starting. The math: 100 trays per week, $20 to $30 net revenue per tray, harvested in a basement, garage, or spare room. The ceiling is set by how many restaurants and farmers market customers you can serve, not by the growing setup.
Is it legal to sell microgreens in IL?
Yes. In most of Illinois, microgreens fall under the state's cottage food law for direct-to-consumer retail at farmers markets and to private customers. Restaurant wholesale typically requires a basic food handler permit. Verify with the Illinois Department of Agriculture before you sign a wholesale contract.
What microgreens sell best in Dupo?
Sunflower, pea shoots, and radish are the three highest-volume sellers in nearly every U.S. city, including Dupo. Broccoli is the highest-margin variety because of its sulforaphane reputation with health-focused buyers. Specialty varieties like amaranth and shiso command premium pricing from chef-driven restaurants.
How much space do I need to grow microgreens in Dupo?
A 10 by 10 foot room with two shelving units holds 60 to 80 active trays, which is enough to produce $3,000 to $5,000 per month. A basement, garage corner, spare bedroom, or sunroom all work in Dupo's climate. Vertical shelving is the fastest path to higher revenue per square foot.
What is the best app for tracking microgreen production in Dupo?
Grown Like A Pro is the operating system used by working microgreen farms in Dupo. It handles seed density math, watering schedules, harvest timing, inventory, customer orders, and the financial side. Free 30-day trial with no credit card.
How long does it take to learn to grow microgreens commercially?
Most growers in Dupo are selling their first trays within 30 days of starting. Commercial proficiency, meaning you can run 50-plus trays per week without losing crops to mold or under-seeding, takes 60 to 90 days. The seed density and watering math is the single biggest predictor of how fast you get there.
Do I need a license to sell microgreens in Dupo?
For farmers market and direct-to-consumer sales in Dupo, most growers operate under Illinois's cottage food law with no special license. For wholesale to restaurants and grocery stores, you typically need a basic food handler permit, a sales tax permit, and depending on volume, an inspection from your county health department.
How do I price microgreens to restaurants in Dupo?
Restaurant wholesale in Dupo runs $1.50 to $2.50 per ounce for standard varieties, $3 to $5 per ounce for specialty varieties like shiso, micro basil, or amaranth. Sell by the pound for repeat accounts. Local fresh commands a premium over the shipped-in product that most Dupo restaurants currently buy.

Related guides

Once you have the Dupo math in your head, the next read is the density chart that drives every tray you plant.

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