Mizuna

A practical vegetable garden series

 

Grow crisp, feathery Japanese greens from spring through autumn, and keep fresh leaves coming with small repeat sowings.

 

Written for home gardeners in Hungary

CHAPTER WELCOME

Your mizuna season starts here

This book follows the whole journey: seed → seedling → garden → care → harvest → kitchen → next season.

Mizuna is a quick-growing Japanese mustard green with finely cut, feathery leaves and a mild peppery flavour. It is easy to grow in a garden bed, raised bed or container, and you can pick it as baby leaves or let it form a full rosette. It prefers cool, moist weather, so it suits spring and autumn in Hungary. Near Győr, sow a little in April and make further sowings from August into September; protect autumn plants with fleece or a cloche as nights turn cold. Hot, dry spells can make plants flower early, so keep the soil moist and offer light shade in summer.

Sow mizuna directly into prepared soil about 1 cm deep, or start a few seeds in modules if the bed is not ready. Germination is usually quick in mild conditions. Thin seedlings to about 10–15 cm apart for repeated small-leaf harvests, or farther apart for larger plants. Sow small batches every couple of weeks instead of all at once. Near Győr, avoid the hottest part of summer unless you can water reliably and provide light afternoon shade. Pick outer leaves or cut a whole rosette before the flower stalk rises.

Our Hungarian calendar

 

 

The rule for this series: dates guide us, but the plant and the weather make the final decision.

CHAPTER 1

Meet the Mizuna

Mizuna makes a loose rosette of finely cut leaves with a gentle mustard bite.

Mizuna (Brassica rapa subsp. nipposinica) is a leafy member of the cabbage family, grown for its leaves rather than a head or root. Its narrow, deeply cut leaves form a loose, leafy rosette and have a mild, peppery mustard flavour. Green and reddish-purple varieties are available. Mizuna is often called Japanese mustard greens and is related to other Asian vegetables, but it is different from mibuna, which has longer, smoother-edged leaves. It grows quickly in cool weather and can be picked young for salads or larger for cooking.

Mizuna or mibuna?

 

Two related Japanese greens with different leaf shapes

·  Mizuna: finely cut, feathery leaves in a loose rosette.

·  Mibuna: longer, narrower leaves with smooth edges and a mild mustard taste.

·  Cool-season leaf crop: spring and autumn weather suit it best.

·  Cut-and-come-again: pick a few outer leaves and let the centre regrow.

·  Quick to grow: baby leaves can be ready in about a month.

·  Pick a variety: green and purple-red mizuna both grow well in containers.

 

CHAPTER 2

Choose Your Mizuna

Choose a green or red variety and decide whether to pick baby leaves or full rosettes.

Ask yourself five questions

1.         Can I grow this crop in cool spring or autumn weather?

2.         Do I have a bed or pot where I can keep the soil moist?

3.         Can I sow small batches every couple of weeks?

4.         Would I like baby leaves, larger cooking leaves, or both?

5.         Can I give plants light shade during a hot, dry spell?

A beginner-friendly first planting

 

 

 

CHAPTER 3

Let’s Sow

Mizuna is simple to grow from seed, and direct sowing avoids transplant stress. Sow in cool, mild weather and keep the seedbed moist until the tiny seedlings appear. A short row gives plenty of leaves, while sowing a few seeds at a time helps spread the harvest. In Hungary, spring and late summer are the easiest seasons. During summer heat, choose a cooler spot in light shade and water regularly, or pause sowing until temperatures ease.

When to sow in Hungary

Near Győr, sow outdoors from April to May for an early crop, then again from August into September for autumn leaves. Sow seeds thinly about 1 cm deep in rows around 20–25 cm apart. When seedlings are large enough to handle, thin them to 10–15 cm apart for regular leaf picking or more widely for full rosettes. Keep the soil evenly moist. If you want an earlier start, sow in modules indoors from March and plant out sturdy seedlings after hardening them off.

What you need

·  Mizuna seed, in a green or red-leaved variety

·  A fine, weed-free seedbed or a container at least 30 cm wide

·  Moist, fertile soil or fresh peat-free potting compost

·  Water and light fleece or insect mesh for protection

·  Plant labels to mark each small sowing

Sowing, step by step

1.         Prepare a fine, moist seedbed and remove weeds.

2.         Make a shallow drill about 1 cm deep.

3.         Sow seeds thinly, cover lightly and label the row.

4.         Water gently and keep the soil moist until seedlings emerge.

5.         Thin seedlings once they are easy to handle, using the leaves in salads.

 

 

CHAPTER 4

Seedling School

Mizuna seedlings start small, then quickly make their distinctive cut leaves in cool, moist soil.

Recognise young mizuna plants

Mizuna seedlings begin with two rounded seed leaves, followed by true leaves with gently toothed edges that become more deeply cut as the plant grows. They form a low rosette rather than a tall stem. Keep the seedbed moist and weed-free while seedlings are small. If plants are crowded, thin them gently and eat the thinnings. Protect young leaves from flea beetles and slugs with fine mesh or fleece, and check regularly beneath the cover.

Why is a flower stalk appearing?

Mizuna eventually flowers to set seed, but heat, drought or other stress can make it bolt sooner than you expect. A tall central stem with small yellow flowers means the leafy harvest is nearing its end. Keep plants watered, pick outer leaves regularly and give them light shade during hot weather to delay bolting. The buds and flowers are edible, though the leaves may become stronger in flavour. Sow another small batch in cooler weather for tender leaves.

Water while they settle

Water newly planted seedlings and keep the soil evenly moist while they establish. Mizuna grows best when the soil does not dry out, especially in warm or windy weather. Water at the base in the morning where possible. Containers dry faster than garden beds, so check them often. Avoid waterlogging: moist, well-drained soil is the aim.

Feeding

Mix mature compost into the bed before sowing to improve fertility and hold moisture. Mizuna is a leafy crop, but a small home planting usually does not need heavy feeding. If the soil is poor or plants are pale and slow despite regular water, use a balanced liquid vegetable feed according to its label. Too much nitrogen can make soft, lush growth more prone to damage.

 

 

CHAPTER 5

Ready for the Real World

Young mizuna is easy to plant out, but it needs cool conditions and steady moisture.

Before planting: check the seedlings and the bed

1.         Choose sturdy seedlings with several true leaves.

2.         Harden indoor-grown plants off gradually for about a week.

3.         Prepare fertile, moisture-retentive but well-drained soil.

4.         Choose spring or autumn weather, avoiding a hot, dry spell.

5.         Have mesh or fleece ready to protect young leaves.

When is it ready in Hungary?

Near Győr, direct sow mizuna in April or May for spring leaves, then make another sowing from August into September for autumn. During the hot weeks of summer, seedlings may struggle or flower early, so choose light shade and water consistently if you sow then. Autumn crops can keep producing in cool weather; cover them with fleece or a cloche as frost arrives. Adjust the calendar to your garden’s weather and the seed packet.

If you started seedlings indoors, plant them out once they are sturdy and well rooted, after gradually acclimating them to outdoor conditions. Space plants 10–15 cm apart for small, repeatedly picked leaves, or up to 30–40 cm apart if you want full rosettes. Mizuna can also be sown directly into a large pot. Do not let containers dry out in summer heat.

 

 

CHAPTER 6

Give Them a Good Home

Cool weather, moist soil and a little summer shade help mizuna stay leafy and tender.

The right place

Choose a spot in sun during cool spring and autumn weather, or light shade when summer days are hot. Mizuna likes fertile soil that holds moisture but drains well. Work mature compost into the bed before sowing and remove weeds so young plants do not have to compete. This compact crop fits between slower-growing vegetables and grows well in a container at least 30 cm wide.

Spacing

Thin plants to around 10–15 cm apart for regular pickings of small leaves, about 20 cm for larger leaves, or 30–40 cm for full-sized rosettes. Leave 20–25 cm between rows so you can water and harvest easily. In a container, sow thinly or thin seedlings so air can move between the leaves. Follow the variety packet if it recommends different spacing.

Planting day

1.         Water the seedlings and prepare moist, weed-free soil.

2.         Make a hole large enough for each root ball.

3.         Set each plant at the same depth it grew in its module.

4.         Firm gently around the roots and water in well.

5.         Cover with mesh or fleece if pests or cold are a concern.

Growing in pots

Mizuna is a good choice for a pot or growing bag. Choose a container at least 30 cm wide with drainage holes and fill it with fresh potting compost. Sow thinly, then thin to give the leaves room. Place it in a sunny position in spring or autumn and move it to light shade in hot weather. Water regularly because pots dry quickly. Pick outer leaves as needed or cut the whole rosette.

 

CHAPTER 7

Water, Feed & Keep Them Growing

Regular water and small repeat sowings help keep mizuna leaves crisp and tender.

Watering

Keep the soil evenly moist, especially when plants are young and during warm spells. Dry soil can slow growth and encourage early flowering. Water thoroughly at the base rather than giving frequent light sprinkles. Check containers daily in hot weather. Morning watering gives the leaves time to dry and helps plants cope with the day’s heat.

Mulch

Once seedlings are established, a thin layer of fine compost around the plants can help retain moisture and suppress weeds. Leave a little space around each stem so the leaves do not sit on damp material. Mulching is optional for baby-leaf rows; regular watering and weeding matter more. Keep the surface open enough to spot slugs.

Feeding

Mizuna grows well in soil enriched with mature compost before sowing. If you are picking leaves over several weeks and growth slows, a balanced liquid feed may help; follow the product label. Avoid overfeeding, and do not use fertiliser as a substitute for water. For a new flush of leaves, sow another small row rather than relying on one plant to produce indefinitely.

Keep plants healthy

Check leaves for flea beetle holes, slugs and aphids, especially while plants are young. Fine mesh can keep many pests away, but secure it at the edges. Weed carefully and water consistently. If plants start to stretch into flower, harvest the usable leaves and sow again when the weather is cooler. Remove old plants after the harvest ends.

 

CHAPTER 8

Flowers, Vines & “What Is That?”

Mizuna leaves form a low rosette; a central flower stem signals that the plant is bolting.

Why are the leaves bitter or the plants flowering?

Hot, dry weather, water stress or a change in day length can make mizuna bolt. Once the central flower stem rises, leaves may taste stronger and harvests soon finish. Keep the soil moist, offer light shade in summer and sow in cooler weather to reduce stress. If flower buds appear, pick them while tender or harvest the plant if the leaves still taste good. Then start another small sowing for a fresh crop.

The beginner’s trouble guide

 

 

 

CHAPTER 9

Can I Pick It Yet?

Yes—pick mizuna leaves once they are large enough to enjoy, while they are young and tender.

What “ready” looks like

Baby leaves can be ready in about a month, when plants are around 8–10 cm tall. Pick a few outer leaves from each plant and leave the centre to keep growing. For a larger harvest, cut the whole rosette after about six to eight weeks, leaving roughly 5 cm above the soil so it can regrow. Harvest before the flower stem rises for the mildest leaves. Taste a leaf as it grows; flavour gets stronger as leaves mature.

Harvest from spring to autumn

 

How often should I check?

Check the row every few days once leaves are a useful size. Pick in the cool part of the day, and take only what you plan to use because tender leaves wilt quickly. For cut-and-come-again picking, remove outer leaves without damaging the centre. If you want a full harvest, cut above the crown and leave the base intact for possible regrowth. Keep sowing small batches every couple of weeks for a steady supply.

 

 

CHAPTER 10

From the Garden to the Kitchen

Mizuna adds a crisp, peppery note to salads, soups and quick stir-fries.

The first rule: wash just before using

Rinse leaves in cool water and dry them gently before eating. Young mizuna is delicious raw in salads, sandwiches and wraps. Larger leaves are good lightly steamed, wilted into soup or tossed briefly into a stir-fry. Add them near the end of cooking so they keep their colour and slight crunch. The mild mustard flavour pairs well with sesame, citrus, eggs and noodles.

Match mizuna to the dish

·  Salad: mix young leaves with lettuce and a simple dressing.

·  Sandwich: add a handful of crisp leaves for a peppery bite.

·  Stir-fry: toss larger leaves in for the final minute of cooking.

·  Soup: stir in chopped leaves just before serving.

 

Storing fresh mizuna

Mizuna is best used soon after picking. If you need to store it, leave the leaves unwashed, wrap them loosely in a damp paper towel and keep them in a bag in the refrigerator. Wash and dry them just before cooking or serving. Baby leaves wilt quickly, so harvest only what you need when possible.

When you have more than you can use

Sow small amounts every couple of weeks to avoid a glut and keep fresh leaves coming. If one planting grows faster than you can eat it, cut a full rosette and use the larger leaves in soup or a stir-fry. You can also blanch and freeze cooked mizuna for later dishes, though the texture will soften. A flower stalk does not mean the plant is useless: tender buds and flowers are edible.

CHAPTER 11

Next Season Starts Now

A few notes on sowing dates, summer shade and harvest will help next year’s mizuna.

Keep a tiny garden record

·  Seed variety and whether it was green or red mizuna

·  Date of each sowing and first harvest

·  Whether spring or autumn gave the best leaves

·  How the plants responded to summer heat

·  How often you watered during dry spells

·  When the flower stalks began to appear

·  Which sowing produced the longest harvest

Saving seed and planning another crop

You can save seed from a healthy mizuna plant if it is an open-pollinated variety. Leave one plant to flower and form long seed pods, then let the pods dry on the plant before collecting them. Mizuna belongs to Brassica rapa, so nearby related crops such as turnips or some Asian greens may cross-pollinate; saved seed may not come true to type. Seed from F1 hybrids also may differ from the parent. For dependable results, buy fresh seed or grow one known variety for seed.

1.         Choose a healthy plant of an open-pollinated mizuna variety.

2.         Let it flower and form seed pods instead of harvesting every leaf.

3.         Wait until the pods are dry and papery on the plant.

4.         Collect the seeds and dry them fully in a warm, airy place.

5.         Label the variety and year, then store cool and dry.

 

 

COME GROW WITH ME

MIZUNA CHEAT SHEET

The page to come back to when you have soil on your hands and no time to reread the whole book.

 

 

 

COME GROW WITH ME • MIZUNA

Seasonal guidance is adapted for Hungarian home gardens.