Early Mizuna

Family: Brassicaceae Leafy Green

Tender, peppery leaves unfurl with a crisp, juicy snap—an early harvest that feels as bright as spring.

Early Mizuna forms a compact rosette of finely cut, feathery greens with a clean, lively bite that shines in quick stir-fries, silky sauces, and fresh salads, and it also pickles beautifully for tangy depth. At just about 30 days, it’s a satisfying crop for gardeners who love bold flavor without waiting long.

Light: Full SunMaturity: 30 DaysHabit: Rosette

Planting schedules and alerts are optimized for Columbus (Zone 6b).

Crop Dates

Milestone	Date
Start Indoors	Direct Sow
Last Frost	Apr 25th
Transplant / Sow Outdoors	Apr 18th
Harvest Begins	May 18th
Harvest Ends	Oct 16th

Crop Details

Trait	Value
Days to Maturity	30
Sun Requirements	Full Sun
Growth Habit	Rosette
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	45
Min Soil Temp (°F)	40
Min Night Temp (°F)	32
Harden Off (days)	5

Culinary Notes

Chef's Note

Early mizuna hits with a lively, mustard-leaning snap that stays crisp until it meets heat—perfect for fast wok work or a brief tumble into warm broth. Its peppery brightness loves oily umami (sesame/soy/miso) and sour lift (rice vinegar), and it pickles into a tangy, crunchy condiment rather than a soft green.

Best Uses

hot quick stir-fries where the leaves wilt in seconds
silky pan sauces or broth reductions for a peppery-green gloss
fresh salads that keep a snappy bite under vinaigrette
quick pickles to turn that mustard edge into tangy crunch

Flavor Profile

peppery mustard bite clean, juicy crunch lightly sweet, leafy bitterness quick-cooking tenderness

Kitchen Pairings

sesame oil garlic ginger soy sauce miso rice vinegar

Frequently Asked Questions

What’s a common pest or disease for Brassica rapa var. japonica (mizuna), and how can I stop it?

Mizuna is frequently hit by flea beetles, which chew small shot-holes in leaves and can stunt young plants fast. Use row cover immediately after sowing (remove briefly only for thinning/harvest) and apply an insecticidal soap if you see active feeding; keep the bed weed-free so beetles don’t move in from surrounding growth. If you notice yellowing with soggy stems or leaves, improve airflow and avoid overhead watering, since Brassica can develop damping-off or leaf spotting in consistently wet conditions.

How often should I water early mizuna during its main growth phase (about days 10–30)?

Keep soil evenly moist but never waterlogged during leaf expansion; aim for watering whenever the top 1 inch of soil feels dry to the touch. In full sun, this often means light watering 1–2 times per week, increasing frequency during hot spells to prevent leaf toughness and bitterness. Water at the soil line to avoid wet foliage, which increases the chance of leaf spotting.

How do I tell when early mizuna is ready to harvest (around 30 days)?

Harvest when plants form a usable rosette and leaves are tender—about 30 days from sowing, typically when leaves are roughly 4–6 inches long. For continuous harvest, snip outer leaves with scissors, leaving the center to regrow; don’t wait for full flowering, or leaves get tougher and more bitter. If leaf edges look tough or plants start stretching upward, switch to harvesting more frequently.