When to Plant Daikon in Canberra — Cold / Highland Guide
Photo: Wikimedia Commons
Daikon is a large, mild-flavoured Asian radish that has become increasingly popular in Australian home gardens. It grows fast (60-70 days), breaks up compacted soil with its deep taproot, and is excellent both as a food crop and green manure. Easier to grow than many root vegetables, it thrives in cooler months across all Australian zones.
Planting Calendar
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| D | D | D | D | — | — | — | — | D | D | D | D |
S = Seed Tray T = Transplant D = Direct Sow
Current Growing Conditions
Soil temperature: 18.9°C (optimal range: 10–20°C) ✓ Ready to plant
How to Grow Daikon in Cold / Highland Australia
When to Plant
October to February. Short window but daikon matures in 60-70 days. Two sowings possible: October and January.
- Soil
- Deep, loose, well-drained soil free of stones. Daikon roots can grow 30-60cm long, so soil must be deeply prepared. Sandy loam is ideal. In heavy clay, grow in raised beds at least 40cm deep or choose shorter varieties like Alpine.
- pH Range
- 6.0-7.0
- Sunlight
- Full sun (6+ hours). Tolerates light shade.
- Spacing
- 25cm apart, 45cm between rows
- Watering
- Even, consistent moisture throughout growth. Water deeply 2-3 times per week. Inconsistent watering causes cracking and pithy (hollow) roots. Reduce slightly in last week before harvest.
Companion plants: Lettuce, Spinach, Peas, Beans, Cucumber
Avoid planting near: Other brassicas (shares diseases), Strawberry
Cold / Highland Growing Tips for Daikon
Recommended Varieties
- Mino Early
- April Cross
- Alpine
Key Challenges
- Short growing season
- Frost damage to exposed roots
Pro Tips
- Fast maturity makes daikon ideal for short highland seasons
- Sow as soon as soil warms in October
- Second sowing in January matures before autumn frosts
Harvesting Daikon
When ready: Root shoulders 5-8cm diameter, visible above soil. Typically 60-70 days from sowing. Pull one test root. Root should be firm, white, and crisp. Pithy or hollow centre means overmaturity.
How to harvest: Loosen soil deeply alongside the root with a garden fork before pulling - daikon roots can be 30-60cm long and will snap if forced. Grasp at the crown and lift steadily. Do not twist.
Common Daikon Pests in Cold / Highland Zones
Organic prevention: Net crops immediately after sowing. Interplant with strong-scented herbs (thyme, rosemary, sage). Decoy moths with white butterfly shapes on sticks (wasps attack territories they think are occupied).
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