MICROGREEN BUSINESS GUIDE · BRENTWOOD, CA

Start a microgreen business in Brentwood, CA.

Most Brentwood residents do not realize that almost none of the microgreens served in town were grown anywhere in east Contra Costa. The restaurants downtown and the spots out toward Highway 4 source from distributors trucking in from elsewhere. The Brentwood grower who steps in first owns a market built around an agricultural identity but currently served by imports.

Quick Answer

You can start a microgreen business in Brentwood with under $400 in initial equipment and grow it into a $1,800 to $5,000 per month side income within 90 days. Here is the local demand picture, the unit economics at Brentwood wholesale prices, and the operating system used by working microgreen farms.

How many of the restaurants in downtown Brentwood and out toward the orchards right now are plating microgreens that did not come from anywhere inside the county?

What Brentwood buys today

Brentwood is one of the fastest-growing cities in the East Bay, with an identity tied to its agricultural roots and a downtown built around a walkable core. The fruit stand and U-pick farm culture is well established, which gives a microgreen grower an audience already primed to buy and ask where the food was grown.

The Saturday farmers market downtown and the broader east Contra Costa market scene pull a steady, willing-to-pay buyer base. The juice bar and wellness culture along Lone Tree Way and the natural grocery channel round out the direct-to-consumer leg.

For indoor growing, the climate is forgiving for most of the year, with summer heat the main consideration. A garage with a window AC or an insulated outbuilding holds the productive window, and the rest of the year a small grow footprint sits comfortably inside the range with little intervention.

Every week you delay, another new Brentwood concept signs a supply agreement with a distributor truck. What does it cost you over two years when the kitchens you wanted are already on someone else's invoice?

The math, in Brentwood prices

Brentwood sits in the standard tier of California wholesale pricing, with east Contra Costa accounts paying a real premium for genuinely local cut-to-order trays. Here is what the unit economics look like at conservative Brentwood numbers.

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 Brentwood pricing.

Break-even week

Week 4

First positive cash week. Most growers hit it.

What that looks like in Brentwood square footage

A 10 by 10 foot room with two vertical shelving units holds 60 to 80 active trays. That is enough to produce $3,000 to $5,000 per month in Brentwood at standard wholesale prices. A two-car garage doubles it. A basement triples it.

What does your year look like when the downtown kitchens are on standing delivery, the Saturday market is a routine cash channel, and the question each Monday is which one new account to add, not whether you can fill the trays?

Three things every working microgreen farm in Brentwood 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 Brentwood 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 Brentwood. 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 Brentwood 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 Brentwood farm on. The growing happens in your basement.

Try Grown Like A Pro free for 30 days →

Brentwood microgreen FAQ

How much can I make growing microgreens in Brentwood?
A working microgreen farm in Brentwood 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 CA?
Yes. In most of California, 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 California Department of Agriculture before you sign a wholesale contract.
What microgreens sell best in Brentwood?
Sunflower, pea shoots, and radish are the three highest-volume sellers in nearly every U.S. city, including Brentwood. 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 Brentwood?
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 Brentwood's climate. Vertical shelving is the fastest path to higher revenue per square foot.
What is the best app for tracking microgreen production in Brentwood?
Grown Like A Pro is the operating system used by working microgreen farms in Brentwood. 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 Brentwood 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 Brentwood?
For farmers market and direct-to-consumer sales in Brentwood, most growers operate under California'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 Brentwood?
Restaurant wholesale in Brentwood 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 Brentwood restaurants currently buy.

Related guides

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

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