Harvesting microgreens at the right stage and storing them correctly can make a noticeable difference to their texture, appearance and freshness. The key is to cut the crop cleanly, keep growing medium out of the harvest, minimise excess surface moisture and refrigerate the greens promptly.
Different varieties reach harvest at different times. Fast crops such as radish may be ready within a week, while pea shoots and other substantial varieties generally need longer. Rather than harvesting every microgreen at the same age, use the crop-specific growing instructions and assess the condition of the plants themselves.
This guide explains when to harvest microgreens, how to cut them, whether to wash them before storage, how to refrigerate them and how to recognise when stored microgreens should be discarded.
Microgreen Harvest Times at a Glance
| Microgreen | Current OzSprout Harvest Guide | Typical Harvest Stage |
|---|---|---|
| Daikon Radish | Approx. 7–10 days | Open cotyledons, strong upright stems |
| Broccoli | Approx. 8–12 days | Open green cotyledons, before or around early true-leaf development |
| Green Mustard | Approx. 8–12 days | Open cotyledons and tender stems |
| Black Sunflower | Approx. 8–12 days | Open cotyledons, thick crisp stems |
| Maple Pea Shoots | Approx. 10–14 days | Tender shoots and young leaves |
| Blue Pea Tendrils | Approx. 10–16 days | Developed shoots with young tendrils |
These ranges are practical starting points rather than rigid deadlines. Temperature, light, seed batch and growing conditions can all change the exact harvest day.
How Do You Know When Microgreens Are Ready to Harvest?
For many common microgreens, the best harvest window is after the cotyledons have fully opened and developed their characteristic colour but before the crop becomes overly mature or fibrous.
Look for several signs together:
- The cotyledons are fully open.
- The stems are upright and firm.
- The crop has developed good colour.
- The canopy is reasonably even.
- The leaves and stems are still tender.
- The crop is free from obvious mould, slime or deterioration.
The first true leaves may just be starting to appear on many crops. This does not automatically mean the microgreens are overgrown.
Some varieties, particularly pea shoots and herbs, are intentionally grown further than fast brassica microgreens.
Should You Harvest Microgreens Before or After the First True Leaves?
There is no universal rule.
Broccoli, radish, mustard and sunflower are commonly harvested around the cotyledon stage or as the earliest true leaves begin appearing.
Pea shoots and pea tendrils can be grown further because the tender stems, leaves and tendrils are part of the desired crop.
The correct harvest stage therefore depends on the variety rather than on one definition applied to every microgreen.
What You Need to Harvest Microgreens
- Clean, sharp scissors or a clean harvesting knife
- Clean hands
- A clean food-safe container
- Refrigeration
A healthy crop is also easier to harvest when it has been grown in a tray with good drainage. The OzSprout Microgreen & Wheatgrass Grow Tray can be paired with the matching Microgreen & Wheatgrass Drip Tray for drainage and bottom watering during the growing period.
Should You Water Microgreens Before Harvest?
Avoid deliberately soaking the foliage immediately before harvesting.
If the crop genuinely needs water, bottom water the root zone rather than spraying the canopy.
This allows the plant to take up moisture without unnecessarily wetting the leaves and stems that are about to be harvested.
Before cutting, the crop should ideally be:
- Well hydrated
- Firm and upright
- Free from standing water
- As dry on the surface as practical
For the complete watering method, see How to Water Microgreens: Misting vs Bottom Watering.
How to Harvest Microgreens Step by Step
Step 1: Start With Clean Equipment
Wash your hands and use clean, sharp scissors or a clean harvesting knife.
A sharp blade creates a cleaner cut and is less likely to crush the delicate stems.
Step 2: Inspect the Crop
Before harvesting, look across the entire tray.
Do not harvest crops showing:
- Obvious mould
- Slime
- Widespread decay
- Collapsed or rotting stems
- Abnormal discolouration
- Strong sour, rotten or musty odours
If you are unsure whether white growth around the roots is normal root hair or mould, use the OzSprout guide to Mould vs Root Hairs on Sprouts & Microgreens before harvesting.
Step 3: Hold a Small Section Gently
Gather a manageable section of microgreens without crushing the leaves.
Avoid gripping the crop tightly because bruised leaves and stems deteriorate more quickly.
Step 4: Cut Above the Growing Medium
Cut cleanly through the stems above the surface of the growing medium.
Do not drag the scissors through:
- Coco fibre
- Seed-raising mix
- Soil
- Root material
- Seed hulls lying on the surface
Keeping growing medium out of the harvest reduces the amount of cleaning required afterwards.
Step 5: Transfer the Harvest Gently
Place the cut microgreens into a clean food-safe container without tightly compressing them.
Continue working across the tray until the required amount has been harvested.
Should You Wash Microgreens Before Storing Them?
For home-grown microgreens, it is generally better to avoid washing them well in advance of storage unless there is a specific reason to do so.
Extra surface moisture can shorten storage quality.
A practical method is:
- Harvest the microgreens cleanly above the growing medium.
- Keep them as dry as practical.
- Refrigerate them promptly.
- Wash with cool drinking-quality water shortly before eating.
- Drain well and serve promptly.
If you do wash microgreens before refrigeration, remove as much excess water as practical before placing them into storage.
How to Store Fresh Microgreens in the Fridge
Fresh microgreens are highly perishable and should be refrigerated promptly after harvest.
OzSprout's current fresh microgreen storage guidance is to keep harvested produce at approximately 0–5°C.
For home storage:
- Make sure the microgreens are reasonably dry.
- Remove obviously damaged leaves or stems.
- Place the crop into a clean food-safe container.
- Avoid crushing or tightly compressing the greens.
- Refrigerate promptly at 0–5°C.
- Keep the container protected from contamination.
- Return unused microgreens to the refrigerator promptly after serving.
How Much Moisture Should Be in the Storage Container?
The aim is to prevent both dehydration and excessive free moisture.
Microgreens should not be:
- Dripping wet
- Sitting in pooled water
- Packed into a container covered in condensation
Excess moisture can accelerate deterioration and cause delicate leaves to collapse.
At the same time, completely exposed microgreens can lose moisture and wilt.
A clean covered container provides a practical balance while protecting the crop from contamination and excessive moisture loss.
How Long Do Microgreens Last in the Fridge?
There is no single shelf life that applies to every microgreen.
Storage life depends on:
- Crop variety
- Harvest maturity
- Condition at harvest
- Surface moisture
- Refrigerator temperature
- How much the crop has been handled
- Whether the leaves or stems have been bruised
Rather than assuming all microgreens remain suitable for a fixed number of days, use them promptly while they are fresh, crisp and in good condition.
Which Microgreens Store Best?
Storage performance varies substantially by crop.
Broccoli Microgreens
Broccoli has tender but reasonably sturdy cotyledons and fine stems. Harvest it cleanly and keep it refrigerated and as dry as practical.
Radish Microgreens
Radish has crisp stems and substantial cotyledons and generally handles harvest well when cut at the correct stage.
Sunflower Microgreens
Sunflower has thick stems and broad fleshy cotyledons. Its sturdy texture makes it relatively substantial, but damaged leaves can deteriorate quickly.
Pea Shoots
Pea shoots have substantial stems and leaves but can lose firmness when they become dehydrated.
Harvest tender shoots before they become excessively fibrous.
Very Delicate Herbs and Fine Microgreens
Fine herbs and delicate speciality microgreens generally require gentler handling because the thin leaves and stems can bruise more easily.
How Can You Tell When Stored Microgreens Have Spoiled?
Discard stored microgreens if they develop:
- Slime
- Obvious mould
- Strong sour, rotten or musty odours
- Significant discolouration
- Soft, wet or decaying tissue
- Other clear signs of deterioration
Do not taste questionable microgreens to decide whether they are safe.
Can You Harvest Only Part of a Microgreen Tray?
Yes. Home growers can harvest only the amount needed and leave the rest of the crop growing for a short period.
If doing this:
- Use clean scissors each time.
- Avoid damaging the remaining crop.
- Continue normal watering and light management.
- Do not allow cut plant material to remain decomposing on the tray.
However, microgreens have a relatively narrow quality window. Do not hold an increasingly mature tray indefinitely simply to avoid harvesting it.
Can Microgreens Be Harvested More Than Once?
Most microgreens should be treated as a single-harvest crop.
Broccoli, radish, mustard and sunflower generally do not provide a useful second crop after a normal harvest.
Pea shoots can sometimes regrow from lower nodes, but the second crop is usually less uniform than the first.
For reliable regular production, sowing fresh trays at intervals is generally more predictable than relying on regrowth.
What Should You Do With the Tray After Harvest?
After the crop has been removed:
- Remove the spent roots and growing medium.
- Dispose of or compost suitable organic material where appropriate.
- Remove seed hulls and plant debris.
- Wash the tray thoroughly.
- Allow it to dry completely before storage or reuse.
Reusable trays should begin each new crop clean rather than carrying old roots and organic debris into the next planting.
How to Maintain a Continuous Supply of Fresh Microgreens
Instead of growing one large crop and storing it for a long period, home growers can stagger sowings.
For example, sow smaller trays several days apart so that one crop is approaching harvest while another is still growing.
This can provide:
- More regular fresh harvests
- Less reliance on long refrigeration periods
- More variety throughout the week
- Less risk of harvesting more than you can use
If you are still learning the full seed-to-harvest process, see How to Grow Microgreens at Home in Australia.
Prefer Fresh Microgreens Grown to Order?
If you do not want to grow and harvest your own crop, OzSprout also produces fresh microgreens to order.
For example, Fresh Broccoli Microgreens – Grown to Order are harvested at the young microgreen stage and supplied as fresh cut greens.
Fresh crops are grown specifically for confirmed orders rather than maintained as regular ready-to-ship stock. To arrange an order, email admin@ozsprout.com.au with the quantity required and when you need the crop. Availability and expected timing are confirmed before growing begins.
Microgreen Harvest & Storage Food Safety
Microgreens are commonly eaten raw, so clean handling matters during harvesting and refrigeration.
- Wash hands before harvesting.
- Use clean cutting tools.
- Use clean food-safe storage containers.
- Keep growing medium out of the harvested crop.
- Use drinking-quality water if washing.
- Refrigerate promptly.
- Protect stored microgreens from cross-contamination.
- Discard produce showing mould, slime, decay or abnormal odours.
Visible freshness does not guarantee that raw produce is microbiologically free from harmful organisms, so good hygiene should be maintained throughout growing, harvesting, storage and preparation.
Frequently Asked Questions About Harvesting & Storing Microgreens
When should you harvest microgreens?
Many varieties are ready after their cotyledons have opened and developed good colour, often before or around the first true-leaf stage. Follow the crop-specific harvest range rather than using one age for every variety.
What time of day should microgreens be harvested?
For home growers, crop condition matters more than a particular clock time. Harvest when the plants are well hydrated, cool and not covered in irrigation water.
Should you water microgreens before harvesting?
If the growing medium is dry, bottom water the root zone. Avoid deliberately spraying or soaking the leaves immediately before harvest.
Should you wash microgreens immediately after harvesting?
Not necessarily. If they have been grown and harvested cleanly, keeping them dry and washing shortly before use can simplify storage. If washed before refrigeration, drain and dry them thoroughly first.
What temperature should microgreens be stored at?
OzSprout's current fresh microgreen guidance is refrigeration at approximately 0–5°C.
How long can microgreens be kept?
There is no universal number of days. Variety, harvest condition, moisture, handling and refrigerator temperature all affect storage life. Use them promptly while they remain fresh.
Can you freeze fresh microgreens?
Freezing generally damages the crisp texture of delicate fresh microgreens. Refrigeration is preferable when the crop is intended to be eaten as fresh greens.
Why are my stored microgreens slimy?
Excess moisture, plant damage, age and deterioration can all contribute. Slimy microgreens should be discarded.
Can you harvest microgreens twice?
Most varieties should be treated as single-harvest crops. Pea shoots can sometimes regrow, but a fresh sowing is generally more predictable.
How to Keep Harvested Microgreens Fresh
For the best results:
- Harvest at the correct stage for the crop.
- Use clean, sharp cutting tools.
- Cut above the growing medium.
- Handle delicate leaves gently.
- Avoid harvesting a soaking-wet canopy.
- Keep harvested greens as dry as practical.
- Refrigerate promptly at approximately 0–5°C.
- Wash shortly before use where appropriate.
- Discard crops showing deterioration.
The combination of good harvest timing, clean cutting, moisture control and refrigeration is more important than trying to force every microgreen variety into the same fixed storage period.