MICROGREEN BUSINESS GUIDE · SAN BRUNO, CA

Start a microgreen business in San Bruno, CA.

Most San Bruno residents do not realize that almost none of the microgreens served at local restaurants were grown anywhere in San Mateo County. The dining base along San Mateo Avenue and around the Tanforan corridor relies on regional distributors. The San Bruno grower who steps in first becomes the obvious local supplier.

Quick Answer

You can start a microgreen business in San Bruno 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 Bruno wholesale prices, and the operating system used by working microgreen farms.

Walk into five restaurants along San Mateo Avenue and around the BART station and ask where the microgreens came from. How often does the answer point back to anywhere inside the county?

What San Bruno buys today

San Bruno sits just south of San Francisco, with a downtown core along San Mateo Avenue and a steady flow of residential and commercial activity around the Tanforan area. The restaurant base reflects the city's mix of legacy and newer concepts, and the supply chain for delicate produce has not kept pace with the dining evolution.

The Saturday farmers markets across the north Peninsula pull a willing-to-pay buyer base. The juice and wellness culture along El Camino and the natural grocery scene layer in direct-to-consumer demand alongside the restaurant base.

For indoor growing, San Bruno's coastal-influenced climate is unusually friendly. Mild year-round temperatures hold a garage or spare-room grow space comfortably inside the productive window with minimal intervention, keeping costs predictable.

If a grower in South San Francisco or Burlingame locks down the San Bruno restaurant list in the next 60 days, what does that cost you over the next two years at north Peninsula prices?

The math, in San Bruno prices

San Bruno sits in the mid to upper tier of California wholesale pricing, with north Peninsula accounts paying a real premium for genuinely local cut-to-order trays. Here is what the unit economics look like at conservative San Bruno 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 Bruno pricing.

Break-even week

Week 4

First positive cash week. Most growers hit it.

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

Picture the version of your week where the San Mateo Avenue kitchens are on standing Tuesday delivery, the Saturday market is a routine cash channel, and the planning runs through one app.

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

Try Grown Like A Pro free for 30 days →

San Bruno microgreen FAQ

How much can I make growing microgreens in San Bruno?
A working microgreen farm in San Bruno 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 Bruno?
Sunflower, pea shoots, and radish are the three highest-volume sellers in nearly every U.S. city, including San Bruno. 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 Bruno?
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 Bruno'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 Bruno?
Grown Like A Pro is the operating system used by working microgreen farms in San Bruno. 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 Bruno 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 Bruno?
For farmers market and direct-to-consumer sales in San Bruno, 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 Bruno?
Restaurant wholesale in San Bruno 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 Bruno restaurants currently buy.

Related guides

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

Microgreens in nearby cities

← All cities