The Story
Plant Bio
Brassica rapa is a diverse species in the mustard family (Brassicaceae), encompassing turnips, napa cabbage, and various leafy greens. It is widely cultivated as a cool-season vegetable crop and is known for its fast growth.
A Japanese mustard green with finely serrated, feathery, dark red-purple leaves and contrasting green stems. It has a mild, peppery mustard flavor that intensifies with maturity. Fast-growing and popular in salad mixes as a 'cut-and-come-again' green.
Uses & Benefits:
Essentials
At a Glance
Plant Type
Annual
Height
12 inches
Width
12 inches
Light
Full Sun, Partial Sun
Zones
4, 5, 6, 7, 8, 9, 10
Water
Moderate
Humidity
Average
Lifespan
Annual
Native To
Asia
Toxicity
Non-toxic
Bloom period
Late Spring – Late summer
In flower about 4 months of the year
Planting
How to Grow
- Tuck seeds ¼ inch deep into well-draining soil in early spring.
- Keep soil moist with consistent watering during germination, about 2 weeks.
- Thin seedlings to 6 inches apart once they develop true leaves.
- Provide full sun for optimal growth and vibrant color.
- Fertilize with a balanced vegetable fertilizer every 3-4 weeks.
- Mulch around plants to retain moisture and suppress weeds.
Pro Tip
Use organic compost to enrich soil and improve flavor and color intensity.
Keep It Thriving
Care Guide
Do
- Water regularly to keep soil evenly moist 💧
- Apply organic fertilizer every month 🌱
- Mulch to conserve moisture and regulate soil temperature
Don't
- Avoid overwatering to prevent root rot ❌
- Don’t let plants dry out during hot weather
- Refrain from using chemical pesticides without organic options
Seasonal Care Calendar
| Task | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fertilize | ||||||||||||
| Harvest | ||||||||||||
| Mulch | ||||||||||||
| Pest Check | ||||||||||||
| Plant |
Watch Out For
Pests & Diseases
Common Pests
Common Diseases
In the Garden
Landscape Uses & Companions
Landscape Uses
Companion Plants
Multiply
Propagation Methods
Good to Know
Common Questions
Ruby Streaks Mustard questions
What zones can Ruby Streaks Mustard grow in?
Ruby Streaks Mustard is hardy in USDA Zones 4–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.
Is Ruby Streaks Mustard deer resistant?
Not reliably. Deer may browse Ruby Streaks Mustard, especially tender spring growth — plan on repellents or fencing where pressure is high.
When does Ruby Streaks Mustard bloom?
Ruby Streaks Mustard typically blooms in late spring through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.
Does Ruby Streaks Mustard need full sun?
Ruby Streaks Mustard does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.
More Brassica to compare
Chinese Cabbage
Brassica rapa 'Chinese Cabbage'
Osaka Purple Mustard
Brassica juncea 'Osaka Purple'
Vates Champion Collard Greens
Brassica oleracea 'Vates Champion'
Purple Top Turnip
Brassica rapa 'Purple Top'
Romanesco Cauliflower 'Veronica'
Brassica oleracea 'Veronica'
Darkibor Kale
Brassica oleracea 'Darkibor'
Keep exploring
Explore the genus
Grow Ruby Streaks Mustard with confidence
See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.