Species

Brassica junceaMustard

fruit vegetable

Osaka Purple Mustard

Brassica juncea 'Osaka Purple'

The Story

Plant Bio

Osaka Purple is an edible leafy green known for its vibrant purple color and nutritional value.

This cultivar is particularly noted for its enhanced color and flavor, making it popular in culinary uses.

Uses & Benefits:

Bright purple foliage adds vibrant color to vegetable gardens and borders.

Rich in nutrients, perfect for salads and cooking.

Attracts beneficial insects and supports pollinators.

SpeciesBrassica junceaMustard

Essentials

At a Glance

Plant Type

Fruit Vegetable

Height

24 inches

Width

18 inches

Light

Full Sun, Partial Sun

Zones

5, 6, 7, 8

Water

Moderate

Humidity

Average

Lifespan

Annual

Native To

Asia

Toxicity

Non-toxic

Bloom period

Late spring – Early summer

In flower about 2 months of the year

Planting

How to Grow

Tuck seeds 1/4 inch deep into well-draining soil in early spring.
Water regularly to keep soil moist but not waterlogged.
Ensure plants receive full sun for optimal growth.
Thin seedlings to 6 inches apart once established.
Fertilize with a balanced fertilizer every 4 weeks during the growing season.
Harvest leaves when young and tender, approximately 30-40 days after planting.

Pro Tip

Use organic compost to enrich soil and promote healthy, flavorful leaves.

Keep It Thriving

Care Guide

Do

Water consistently to keep soil moist 🌱
Provide full sun for at least 6 hours daily
Thin seedlings to prevent overcrowding
Use organic fertilizers for healthy growth

Don't

Avoid overwatering to prevent root rot ❌
Do not plant in shady areas; it needs full sun
Refrain from using chemical pesticides excessively
Do not neglect pest monitoring

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Fertilize
Harvest
Pest Check
Plant

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Edible vegetable borderColorful kitchen garden bedVivid leafy accent plant

Companion Plants

Carrots Beets Onions Celery Radishes

Multiply

Propagation Methods

Good to Know

Common Questions

Osaka Purple Mustard questions

What zones can Osaka Purple Mustard grow in?

Osaka Purple Mustard is hardy in USDA Zones 5–8. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Osaka Purple Mustard deer resistant?

Not reliably. Deer may browse Osaka Purple Mustard, especially tender spring growth — plan on repellents or fencing where pressure is high.

When does Osaka Purple Mustard bloom?

Osaka Purple Mustard typically blooms in late spring through early summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Osaka Purple Mustard need full sun?

Osaka Purple Mustard does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.