Description
Kohl Rabi Purple Seeds - Certified Organic
Seeds per packet: 100
AT A GLANCE
- Quick harvest: Ready in just 55 to 60 days from sowing
- Eye-catching: Striking purple skin with crisp white flesh inside
- Cold hardy: More frost tolerant than green varieties, perfect for winter
- Dual purpose: Eat the swollen stem and cook young leaves like kale
- Space efficient: Compact plants ideal for small gardens and containers
This purple variety stands out in the garden with its stunning colour and unusual appearance, looking like a small purple spaceship hovering above the soil. The flavour sits somewhere between cabbage and broccoli stems with a hint of apple, mild and sweet when harvested young. Purple Vienna is hardier than green types, making it perfect for autumn and winter gardens when other vegetables struggle. Harvest when tennis ball sized for the best texture, or pick smaller for raw eating in salads.
Alternate Names: Also known as: Purple Vienna, Kohlrabi, German Turnip, Turnip Cabbage, Stem Turnip
PLANTING & GROWING SPECIFICATIONS
Growing Specification | Details |
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Sowing Method | Direct sow preferred |
Season | Autumn, Winter, Spring (March to November) |
Plant Spacing | 15 to 20 cm apart |
Row Spacing | 30 to 40 cm |
Days to Germination | 3 to 10 days |
Germination Temperature | Day: 21°C / Night: 16°C |
Growth Habit | Compact, upright |
Soil pH Range | 6.0 to 7.5 |
Plant Height | 40 to 45 cm |
Plant Width | 30 to 35 cm |
Pollination | Insect pollinated (second year for seed) |
Days to Harvest | 55 to 60 days from sowing |
Colour | Purple skin, white flesh |
Water Requirements | Moderate - 20 to 25 litres per m² weekly |
Sun Requirements | Full sun to part shade - 3 to 6+ hours daily |
Frost Tolerance | Yes - hardy to minus 6°C |
Drought Tolerance | Moderate |
Container Suitable | Yes - minimum: 30 cm diameter × 30 cm depth |
Lifecycle | Biennial (grown as annual) |
Plant Family | Brassicaceae |
Botanical Name | Brassica oleracea var. gongylodes |
Seed Classification | Open Pollinated, Heirloom |
Seed Treatment | None |
Seeds per Gram | Approximately 250 to 300 seeds |
Certification | Australian Certified Organic (ACO) |
GROWING CALENDAR
Climate Zone | Best Planting Months |
---|---|
Tropical | Apr-Aug (Cooler dry season) |
Subtropical | Mar-Sep |
Arid | Mar-Sep |
Temperate | Feb-May, Aug-Nov |
Cool | Feb-May, Sep-Nov |
Tropical (Darwin, Cairns): Grow during the cooler dry season only. Hot, humid conditions cause plants to bolt to seed without forming good bulbs.
Subtropical (Brisbane, Gold Coast): Perfect autumn and winter crop. Avoid mid summer heat which causes bolting. Plant March for ANZAC Day harvest.
Arid (Alice Springs, Broken Hill): Thrives in cooler months with consistent watering. Protect from extreme summer heat.
Temperate (Sydney, Perth, Adelaide): Grows almost year round except mid summer and mid winter. Succession plant for continuous harvest.
Cool (Melbourne, Hobart, Canberra): Perfect for Melbourne and Hobart winters. Purple varieties handle cold better than green types, staying productive even through light frosts.
PLANTING GUIDE
When should I plant Kohl Rabi Purple seeds?
- Best soil temperature: 16°C to 27°C for germination
- Frost considerations: Can handle light frosts once established, more tolerant than green varieties
- Moon planting: Sow during increasing moon for strong stem development
- Succession planting: Every 3 to 4 weeks for continuous supply
- ANZAC Day harvest: Plant in February or March for late April maturity
What soil conditions does Kohl Rabi Purple need?
- Soil type: Rich, moisture retentive loam ideal. Like all brassicas, kohl rabi is a heavy feeder. Add lime to acidic soils
- pH range: 6.0 to 7.5 for optimal growth
- Organic matter: Dig in compost and aged manure three weeks before planting
- Drainage: Good drainage essential but soil must retain moisture
- Nutrient needs: High nitrogen and potassium for stem development
- Soil preparation: Remove stones, enrich with compost, firm soil well
- Container mix: Premium potting mix with 30% compost and handful of blood and bone
GROWING CARE
Water Requirements:
- Keep soil consistently moist throughout growth for tender, sweet stems
- Water deeply once or twice weekly depending on weather
- Irregular watering causes woody, tough stems and splitting
- Mulch around plants to maintain even soil moisture
Feeding Schedule:
- Prepare beds with aged manure and compost three weeks before sowing
- Side dress with blood and bone or complete organic fertiliser when plants are 10 cm tall
- Apply liquid seaweed fortnightly for trace elements
- Keep nitrogen levels high for rapid growth and tender stems
Climate Protection:
- Protect from extreme heat above 30°C which causes bolting to seed
- Provide afternoon shade in hot weather or use shadecloth
- Purple varieties handle frost better than green, no protection needed for light frosts
- Use fleece if temperatures drop below minus 6°C
PEST AND DISEASE SOLUTIONS
Common Challenges:
- Cabbage white butterfly: Cover with fine netting or check daily and squash eggs and small caterpillars. They demolish brassica leaves
- Aphids: Spray with soapy water or strong jet of water. Usually appears during warmer weather
- Slugs and snails: Protect young seedlings with crushed eggshells or organic pellets. Most vulnerable in first few weeks
COMPANION PLANTING
Best Companions:
- Beetroot: Grows well alongside kohl rabi without competition
- Onions: Deter pests and use different soil layers
- Lettuce: Quick crop fits between kohl rabi plants
Avoid Planting Near: Tomatoes, strawberries or pole beans which can inhibit growth. Do not plant where other brassicas grew recently
HARVEST AND STORAGE
When to Harvest:
- Look for stems 5 to 8 cm diameter, tennis ball size for best flavour
- Check by feeling the stem above soil level for firmness
- Typically ready 55 to 60 days after sowing
- Best harvested when young and tender before becoming woody
- Regular harvesting by pulling every second plant allows others to grow larger
Storage Method:
- Fresh: Remove leaves, store stems unwashed in crisper for 2 to 3 weeks
- Preserving: Peel and slice, blanch for 2 minutes, then freeze
- Long-term: Pickle in vinegar or ferment like sauerkraut
- Special tip: Young leaves cook like kale within 2 days of picking, high in nutrition
CULINARY USES
- Peel and eat raw, sliced thinly with salt and lemon juice for crisp texture
- Grate raw into slaws and salads for mild, sweet crunch
- Steam, roast or stir fry lightly, do not overcook
- Pairs beautifully with butter, garlic, lemon, ginger and sesame
- Popular in European, Asian and modern Australian cooking
WATER-WISE GARDEN RATING
- Rating: 3 out of 5 water drops
- Established plants handle short dry periods reasonably well
- Mulching heavily reduces water needs significantly
- Deep watering twice weekly better than frequent light watering
- Suitable for moderately water conscious gardens with good mulch
ORGANIC GROWING TIPS
- Harvest stems when tennis ball sized, larger stems become woody and tough
- Thin seedlings to final spacing when 5 cm tall, use thinnings in salads
- Cook young leaves like kale, they are delicious and nutritious
- Rotate with legumes or root crops, not other brassicas
- Succession plant every three to four weeks for steady winter supply
WHY CHOOSE OUR ORGANIC SEEDS
- Australian Certified Organic (ACO) certified
- Supplied by Happy Valley Seeds to home gardeners
- Seeds tested for local growing conditions
- Grown using organic farming practices
- Supporting sustainable agriculture and biodiversity
All orders ship from Sydney, NSW, Australia.
Where We Ship
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All over Australia, including WA & TAS. We do not ship seeds outside Australia.
Processing Times
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Order dispatch or packing time, 1 to 3 business days. Weekends and public holidays excluded. Transit time is additional.
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Western Australia orders are packed each Thursday and handed to Australia Post on Friday. Place WA orders before Wednesday 11:59 PM Sydney time for Friday dispatch.
Delivery Options and Prices
Standard Post and Parcels, Australia Post or courier
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Typical delivery time, 3 to 10 business days. Remote WA and NT may take longer.
Order contents | Price |
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Seed packets only, or any seeds or garden supplies up to 200 g | $3.95 |
Upgrade seed packet delivery to tracked letter | Add $4.00 |
Mixed items 200 g to 400 g | $5.95 |
Mixed items 401 g to 2 kg | $8.95 |
Mixed items over 2 kg, including seed potatoes, tubers, canes, rhizomes | $13.95 |
Free Standard on orders over $150, any weight | Free |
Free letter option for small seed orders
Seed packet orders under 1 g qualify for free untracked domestic letter shipping when the order value is $40 or more after discounts. Delivery for untracked letters may take 5 to 12 business days, sometimes longer.
Express Post and Parcels, Australia Post or courier
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Typical delivery time is 1 to 3 business days. WA, NT, TAS, and remote areas may take longer.
Order contents | Price |
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Seed packets only | $16 |
Seed packets and bulk weight-based seeds up to 500 g | $19 |
Bulk seeds 0 to 500 g | $19 |
Bulk seeds 501 g to 1 kg | $21 |
Bulk seeds 1.01 kg to 3 kg | $26 |
Bulk seeds 3.01 kg to 5 kg | $45 |
Bulk seeds 5.01 kg to 10 kg | $80 |
Bulk seeds 10.01 kg to 15 kg | $120 |
Important for WA Express
We do not provide Express parcel service for WA orders because Quarantine inspection delays delivery, which defeats the purpose of Express.
State Specific Requirements and Fees
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Western Australia, add $6 per order for Quarantine inspection. All WA seed orders go to Quarantine WA for inspection. Tracking (if any) is activated after inspection, which may take up to 10 business days from our packing date. Delivery within WA generally takes an additional 1 to 5 business days after release from Perth Airport.
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Tasmania, add $3 per order for Biosecurity paperwork. Maximum 1 kg per seed line item. Biosecurity Tasmania restrictions apply.
Tracking and Delivery
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You will receive a dispatch email with a tracking number when your order ships from our warehouse. Some small-value orders may ship as untracked letters.
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Signature on delivery is available. Add $3.95. If not selected, the carrier may leave the parcel in a safe place, your letterbox if it fits, or at a collection point. ID may be required for Registered or Signature services.
Delivery Timeframes and Late or Missing Orders
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Dispatch and delivery times are estimates. Events outside our control, such as weather or carrier delays, can affect timing.
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We use Australia Post guidelines to decide when an order is considered late or missing.
When an order is considered missing
Service | Usual delivery time | Time before an order is counted as missing | Review period before replacement |
---|---|---|---|
Economy delivery | 3 to 7 business days | 20 business days | 2 to 3 business days |
Express delivery | 1 to 3 business days | 5 business days beyond Australia Post’s estimate | 2 to 3 business days |
Delivery guarantee
If your order is lost or damaged in transit, we will work with you on a fair resolution, which may include a full refund, an upgrade to tracked delivery at a subsidised rate, or a one-time replacement. If we resend an order, that replacement is final and is sent at your own risk. No further refund or replacement will be provided.
Important Notes
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We process orders after receiving cleared payment.
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Postage rates are per order. We may combine multiple orders to the same recipient at the same address into one shipment.
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Shipping charges are not discounted during product sales.
Need Help?
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Phone, 1800 733 399
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Business hours, Monday to Friday, 8 am to 5 pm NSW time (AEDT or AEST depending upon daylight savings)
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Address, PO Box 148, Riverstone NSW 2765
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ABN, 63 634 537 492
Frequently Asked Questions
Do you ship outside Australia
No. We only ship within Australia.
How long does Standard delivery take
Most orders arrive in 3 to 10 business days. Remote WA and NT may take longer.
How long does Express delivery take
Most orders arrive in 1 to 3 business days. WA, NT, TAS, and remote areas may take longer.
Do WA orders have delays?
Yes. WA orders go through Quarantine inspection. Tracking activates after inspection.
Can I get a signature on delivery?
Yes. You can add a signature on delivery for $3.95.
When is an order considered missing
We follow Australia Post guidelines. See the timeframes above.
Shipping Restrictions
Western Australia Customers: We can ship most seed line items, except Quarantine WA restricted seed lines to WA. To help us ship your order as quickly and efficiently as possible, please do not include any seed items prohibited in WA; they are listed with the label 'NOT to WA'. Due to quarantine restrictions in WA, there is a 10kg seeds limit per variety. WA orders require additional handling time. Please remain within an approved limit when ordering seeds. We review every WA order before dispatch and remove (or reduce) excess seed quantity from your order to comply with WA biosecurity regulations. Please check further information here
Tasmania Customers: We can ship seeds to Tasmania. Please do not include seed line items labeled 'NOT to TAS'. Please note that the maximum allowable limit per permitted seed line item is 1kg per order.