When someone asks, “How much do microgreens yield per tray?”,
it is tempting to answer with a single number.

You will often see figures such as 8 ounces, 12 ounces, or even much higher
numbers attached to a “1020 tray.”

The problem is that a tray does not have one guaranteed yield.

Yield depends on the crop, variety, planted area, seed density, germination,
growing environment, harvest stage, and even how the harvested crop is measured.

So the useful question is not simply:

“How much does a tray yield?”

It is:

“How much does this crop yield under these specific conditions, and how should
I use that number for production planning?”

That is the question this guide is designed to answer.

What Does “Yield Per Tray” Actually Mean?

Before comparing numbers, we need to define what “yield” means.

A microgreens yield figure normally refers to the fresh weight
harvested from a tray, but even that statement is incomplete unless we know
the tray’s planted area, crop, seed density, and harvest stage.

Experimental and extension data demonstrate that different crops can produce
very different fresh weights even when they are grown under the same general
production system.

Five Terms Worth Keeping Separate

Gross yield:
The total harvested fresh weight before removing material that cannot be sold.

Saleable yield:
The portion of the harvest that is actually usable and marketable.

Yield per tray:
Harvest weight divided by the tray or flat used in the production system.

Yield per area:
Harvest weight divided by planted area.

Planning yield:
The conservative yield number you choose to use for production and business planning.

How Much Can a Tray of Microgreens Yield?

There is a surprisingly wide range.

Penn State’s published microgreens data provide one of the clearest examples.
Across the crops reported in its greenhouse study, measured yields ranged from
46.8 grams for cilantro to 201 grams for Red Rain mustard.

The simple arithmetic average of the 18 listed crop values is about
136.6 grams per tray. But that average is not a universal
“microgreens yield.” It is simply the average of those particular crop results
under that particular trial setup.

Those results are useful because they are measured rather than guessed.
They are not universal promises.

Measured Trial Data Is Better Than a Generic Yield Chart

One of the strongest pieces of evidence available is Johnny’s Microgreens
Yield Data Trial.

Johnny’s tested 29 popular microgreen varieties, growing each
at least three times. Each 1020 flat was filled with the same germination mix,
seed was weighed before and after sowing, and each variety was harvested at
the first-true-leaf stage.

Johnny’s published seed density, yield per tray, and days to maturity, along
with average and raw data.

That methodology matters.

The numbers were measured under defined conditions rather than presented as
an unexplained “typical” yield.

Johnny’s also makes an important limitation clear: its results are a
starting point, not a guarantee that another grower will
reproduce the same yield.

Microgreens Yield by Crop

A useful yield table should always answer at least four questions:

Which crop?
What tray or growing area?
What production conditions?
What harvest stage?

Without those details, comparing yield numbers becomes much less meaningful.

The following Penn State values show how much crop-to-crop differences can matter.

Source:
Penn State Extension. Values are presented as reported measurements from
the cited study, with gram-to-ounce conversions for convenience.

The table immediately reveals an important point:
crop selection matters enormously.

Why Microgreens Yield Varies So Much

If two growers grow the same crop in the same nominal tray size and report
different harvest weights, that doesn’t automatically mean one of them is wrong.

Crop and Variety

Different crops naturally produce different amounts of fresh biomass.
Even within a crop category, varieties can behave differently.

Seed Density

Seed density changes plant population and therefore affects competition,
canopy development and the final harvest.

Seed Germination

A tray planted with 95% germinating seed and a tray planted with 60%
germinating seed are not starting from the same plant population.

Tray Area

The actual growing surface is more useful for comparison than the tray label alone.

Growing Medium

Water-holding capacity, aeration and root-zone conditions can influence plant development.

Light

Light affects the development and quality of the crop during the growth phase.

Temperature and Airflow

Temperature and airflow influence crop development and the overall growing environment.

Harvest Stage

Harvesting earlier and harvesting later can produce different fresh weights.

Measurement Method

A gross fresh weight and a cleaned saleable weight are different measurements.

Seed Density and Yield

Seed density is one of the most important variables a grower can control.

Penn State’s seed-density resources emphasize that seed quantity depends on
species, planted area, average seed weight and germination rather than one
universal grams-per-tray value.

More seed also does not guarantee proportionally more yield.

A 2026 peer-reviewed study examining cress, rocket and pea found that fresh
biomass increased with seed density up to crop-specific thresholds, after which
yield plateaued or decreased under the tested conditions.

The practical lesson is simple:

There is usually an optimal density, not an unlimited relationship between seed and yield.

Does a 1020 Tray Always Produce the Same Yield?

No.

“1020” generally refers to a common tray format, but the usable planted area
can vary by tray design.

This is why Penn State’s seed-density resources use the actual growing area
when calculating seed requirements.

Two trays can have similar outside dimensions but different internal growing areas.

Always identify the planted area, not just the word “tray.”

How to Compare Yield Between Different Tray Sizes

A useful starting formula is:

Suppose a tray produces:

150 g

and the planted area is:

240 square inches

Then:

You can also convert this to a square-foot figure:

But do not assume biological output scales perfectly with area.
Edge effects, density, airflow, light distribution and growing conditions
can change the relationship.

Area normalization is therefore a comparison tool, not a biological guarantee.

Fresh Weight vs. Saleable Yield

This distinction matters enormously once you start selling.

Imagine you harvest:

300 g

from a tray.

After removing damaged, discolored or otherwise unusable material, you have:

270 g saleable product

Your gross yield is 300 g.

Your saleable yield is 270 g.

Your saleable percentage is:

For business planning, saleable yield is usually more useful because it
represents the portion of production you can actually sell.

What Is the “Average” Microgreens Yield?

There is no single average that applies to all microgreens.

You can calculate an average from a particular study, but that average belongs
to that study’s crop mix and growing conditions.

For example, the 18 crop values reported by Penn State average about
136.6 g per tray.

That does not mean:

“The average microgreens tray yields 136.6 g.”

It means:

“The arithmetic mean of the 18 reported crop yields in this dataset is about 136.6 g.”

The second statement is supported. The first is an oversimplification.

Why Your Yield May Not Match an Online Chart

This is completely normal.

Before assuming that your crop is underperforming, compare the conditions.

Check the crop:
Are you growing the same species and variety?

Check the planted area:
Is the usable growing surface the same?

Check the seed rate:
Did you use the same amount of seed?

Check germination:
Did a similar percentage of seeds successfully establish?

Check harvest stage:
Was the crop harvested at the same maturity?

Check growing conditions:
Were light, temperature, airflow and moisture comparable?

Check measurement:
Was the published number gross fresh weight or saleable weight?

A lower number isn’t automatically a failure.

The real question is whether the yield is reasonable for your system and
consistent over repeated cycles.

Harvest Timing Can Change Yield

Harvest timing isn’t just about appearance. It can change the amount you weigh.

Johnny’s reported examples where allowing a variety to grow an additional
day or two beyond an earlier harvest stage increased measured yield.

That illustrates an important trade-off:

Later harvest can increase fresh weight.

But that does not automatically mean:

Later harvest = better business result.

You also need to consider:
quality, texture, appearance, customer preference, shelf life and total
production time.

How Much Yield Do You Need to Plan Production?

Suppose a buyer wants:

10 lb of saleable microgreens per week.

Convert pounds to ounces:

Now imagine your crop produces an expected:

8 oz saleable yield per tray.

Then:

If you also plan around a 10% production loss:

Round up:

23 trays started per week.

This is where a yield number becomes useful: not as trivia, but as an input
into production planning.

Use the
Trayonomics Production Planner
to turn production assumptions into trays, cycles, seed requirements and capacity.

Yield, Cost, and Profit Are Connected

A higher yield can increase your potential revenue per tray, but yield alone
does not determine profitability.

Example A

Yield: 10 oz
Selling price: $2.00/oz
Revenue: $20.00

Example B

Yield: 14 oz
Selling price: $1.25/oz
Revenue: $17.50

Crop B produces more physical weight, but Crop A generates more revenue.

You still need to subtract production costs.

Use the
Cost Per Tray Calculator
to estimate your effective production cost.

Then use the
Profit Margin Calculator
to see how cost and selling price translate into margin.

How to Measure Your Own Microgreens Yield

This is arguably more valuable than copying someone else’s yield chart.

Start a simple production log.

For every tray, record:

• Crop
• Variety
• Tray size
• Planted area
• Seed weight
• Sowing date
• Harvest date
• Harvest stage
• Gross harvest weight
• Saleable weight
• Losses
• Growing-condition notes

Then repeat.

One tray is an anecdote.

Ten or twenty consistent trays begin to become
your production dataset.

Johnny’s provides raw trial data and a spreadsheet approach that can help
growers understand the importance of recording production variables.

A Practical Yield Benchmarking Method

Instead of keeping one “magic yield number,” create three planning numbers.

Conservative Yield

Use a value you can usually achieve without needing a perfect crop.

Expected Yield

Use the average of a meaningful sample of recent successful trays.

Best-Case Yield

Keep this for performance tracking, but don’t build your business around it.

For example:

If you consistently plan production around your best-ever tray,
a weaker harvest can create a shortfall.

A conservative planning number is usually safer.

A Better Way to Think About Yield

A productive grower eventually stops asking:

“What does broccoli yield?”

and starts asking:

“What does my broccoli yield when I use this seed rate, this tray,
this medium, this harvest stage, and this production schedule?”

That is the transition from generic growing information to actual production management.

Published studies help you establish a starting benchmark.

Your own records tell you how your system performs.

Both are valuable.

Microgreens Yield Per Tray: Practical Takeaways

There is no universal microgreens yield per tray.

Published trials show substantial differences among crops. Penn State’s
reported values range from 46.8 g for cilantro to 201 g for Red Rain mustard.

Johnny’s 29-variety trial reinforces the same lesson: yield is affected by
seed density, harvest size, environment, lighting, season, equipment and
other variables.

University production budgets also use crop-specific yield assumptions rather
than treating one number as universal.

Recent research shows that increasing seed density can increase biomass only
up to an optimum, after which yield may flatten or decline.

So the most useful yield figure is not the biggest number you can find online.

It is the number that you can measure, repeat, and defend.

How Many Trays Do You Need?

Once you know your expected saleable yield, planning becomes much easier.

Then round up.

For example:

Target: 100 oz
Expected saleable yield: 8 oz/tray

Therefore:

13 trays required.

If you expect a 10% production loss, adjust the target upward before starting
the trays.

Our
Production Planner
helps connect those assumptions to cycles, seed requirements and growing capacity.

Don’t Confuse High Yield With High Profit

This deserves its own warning.

A crop that produces 15 ounces per tray isn’t automatically more profitable
than a crop producing 8 ounces.

You also need to consider:

seed cost → yield → selling price → production time → labor →
packaging → losses → customer demand → available capacity

Yield is only one variable in the economic equation.

That’s why Trayonomics connects yield information with production planning,
tray cost, and margin calculations.

Frequently Asked Questions

How Much Does a 1020 Tray of Microgreens Yield?

There is no single answer. Published measured results vary substantially by
crop and growing conditions. Penn State’s reported values range from
46.8 g to 201 g per tray across its listed crops.

What Microgreen Has the Highest Yield Per Tray?

It depends on the trial and growing conditions. In Penn State’s published
dataset, Red Rain mustard had the highest listed yield at 201 g per tray.
That should not be interpreted as a universal ranking across every seed
source and growing system.

Does Using More Seed Increase Yield?

Not indefinitely. Recent controlled research found that fresh biomass
increased with seed density up to crop-specific thresholds, after which
yield plateaued or decreased in the tested crops.

Why Is My Microgreens Yield Lower Than an Online Chart?

Check the crop, variety, tray area, seed rate, germination, medium, light,
temperature, airflow, harvest stage and measurement method.
Published trial results are tied to specific production conditions.

Should I Plan Using My Highest Recorded Yield?

No. A conservative or recent average yield is usually safer for production
planning than your best-ever tray.

How Do I Calculate Yield Per Square Foot?

Divide harvested weight by the planted area in square feet.

Should I Use Gross or Saleable Yield for Business Planning?

Use saleable yield when the objective is estimating what you can actually sell.

How Many Trays Do I Need to Meet an Order?

Divide your target saleable output by your expected saleable yield per tray,
then round up. Add an appropriate production-loss allowance when planning real orders.