MICROGREEN BUSINESS GUIDE · NAPA, CA

Start a microgreen business in Napa, CA.The app starts at only $3 a month.

Most Napa residents do not realize that the wine country dining scene almost entirely relies on microgreens trucked in from outside the valley. The tasting rooms and restaurants up and down Highway 29 plate delicate garnishes that were cut days before they arrived. The Napa grower who fixes that and delivers same-morning owns one of the most pricing-friendly markets in the state.

Quick Answer

You can start a microgreen business in Napa with under $400 in initial equipment and grow it into a $3,000 to $8,000 per month side income within 90 days. Here is the local demand picture, the unit economics at Napa wholesale prices, and the operating system used by working microgreen farms.

How many of the restaurants and tasting rooms inside the city of Napa right now are serving microgreens that were not cut anywhere inside the valley this week?

What Napa buys today

Napa is one of the most globally recognized food and wine destinations in the country, with a dining density per capita that punches far above the city's population. The restaurant scene downtown, the spots along the river, and the tasting room kitchens up the valley all share an obsession with quality and a willingness to pay for it, which is the textbook setup for a premium microgreen business.

The Tuesday and Saturday farmers markets pull both locals and visitors who already pay retail without flinching. The wellness culture, juice bars, and natural grocery channel layer in steady direct-to-consumer revenue alongside the restaurant base.

For indoor growing, the climate is forgiving most of the year, with the main consideration being summer heat. A garage with a window AC or an insulated shed holds the productive temperature window comfortably, and the rest of the year the climate works for you instead of against you.

If the first Napa grower to scale locks in the tasting room kitchens before you do, what does that cost you over a five-year horizon in a market where each account is worth multiple trays a week at premium prices?

The math, in Napa prices

Napa sits at the upper end of California wholesale pricing, with wine country and chef-driven accounts paying a real premium for genuinely local cut-to-order trays. Here is what the unit economics look like at conservative Napa 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 Napa pricing.

Break-even week

Week 4

First positive cash week. Most growers hit it.

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

What would it look like a year from now if every tasting room kitchen on your delivery route opened their walk-in to a tray of your microgreens cut that morning? In a market this concentrated and this price-tolerant, that is operational consistency, not ambition.

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

Try Grown Like A Pro free for 30 days →

Napa microgreen FAQ

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

Related guides

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

Microgreens in nearby cities

← All cities