MICROGREEN BUSINESS GUIDE · SAN RAFAEL, CA

Start a microgreen business in San Rafael, CA.

Most San Rafael residents do not realize how short the local microgreen bench is in a county that markets itself as farm-forward. The restaurants along Fourth Street and out in the Canal still source delicate greens from regional distributors. The grower in San Rafael who steps up first owns the conversation.

Quick Answer

You can start a microgreen business in San Rafael with under $400 in initial equipment and grow it into a $2,800 to $7,000 per month side income within 90 days. Here is the local demand picture, the unit economics at San Rafael wholesale prices, and the operating system used by working microgreen farms.

Walk into five chef-owned spots on Fourth Street and ask where the microgreens on tonight's plates were cut. How often does that answer point back to anything inside Marin?

What San Rafael buys today

San Rafael is the county seat of Marin and home to one of the most concentrated stretches of independent restaurants in the North Bay. Fourth Street has a long-standing dining identity, and the broader county is built on a farm and food story, which sets the stage for a local grower to translate that marketing into actual local supply.

The Sunday farmers market downtown is one of the best attended in Marin, with a buyer base that pays for quality without hesitation. Add in the juice bar and wellness scene along the 101 corridor and the natural grocery channel, and a grower has three distinct buyer types within a short drive.

For indoor growing, the climate works in your favor. San Rafael's mild coastal-influenced temperatures keep a garage or spare-room grow space inside the productive range almost year-round, which keeps electricity bills predictable and yields consistent.

Every month you wait, another San Rafael restaurant signs a 12-month supply agreement with a distributor truck rolling in from elsewhere. What does it cost you when the chefs you wanted to sell to are already on someone else's invoice?

The math, in San Rafael prices

San Rafael sits in the mid to upper tier of California wholesale pricing, with chef-driven Marin accounts paying a meaningful premium for genuinely local cut-to-order product. Here is what the unit economics look like at conservative San Rafael 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 San Rafael pricing.

Break-even week

Week 4

First positive cash week. Most growers hit it.

What that looks like in San Rafael 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 San Rafael at standard wholesale prices. A two-car garage doubles it. A basement triples it.

Imagine the version of your week where the Fourth Street kitchens are on autopilot delivery, the Sunday market is a steady cash channel, and the planning is done inside an app instead of a spreadsheet. What does that free up in the rest of your life?

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

Try Grown Like A Pro free for 30 days →

San Rafael microgreen FAQ

How much can I make growing microgreens in San Rafael?
A working microgreen farm in San Rafael 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 San Rafael?
Sunflower, pea shoots, and radish are the three highest-volume sellers in nearly every U.S. city, including San Rafael. 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 San Rafael?
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 San Rafael's climate. Vertical shelving is the fastest path to higher revenue per square foot.
What is the best app for tracking microgreen production in San Rafael?
Grown Like A Pro is the operating system used by working microgreen farms in San Rafael. 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 San Rafael 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 San Rafael?
For farmers market and direct-to-consumer sales in San Rafael, 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 San Rafael?
Restaurant wholesale in San Rafael 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 San Rafael restaurants currently buy.

Related guides

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

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