When to Plant Radish in Alice Springs, Arid / Semi-Arid Guide
Sow year round in Alice Springs. That includes right now, in September.
Published · Last reviewed · By Garden Buddy
Growing advice is reviewed by hand. Planting dates, current conditions and prices on this page update daily.
This Radish guide is written for the Arid / Semi-Arid zone, which takes in Alice Springs, Broken Hill and Port Augusta. Somewhere else? Your postcode picks the right one.
Not your zone? Cairns Brisbane Sydney Melbourne Canberra Perth
Also handy: will it frost this week? and what grows in shade.
Photo: Wikimedia Commons
Radishes are the fastest-growing root vegetable, with some varieties ready in as little as 4 weeks. They are ideal for beginners, succession planting, and filling gaps between slower crops. Summer, winter, and oriental types offer year-round harvesting potential across most Australian zones.
Planting Calendar for Arid / Semi-Arid
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| D | D | D | D | D | D | D | D | D | D | D | D |
S = Seed Tray T = Transplant D = Direct Sow
You can sow radish in any month in Arid / Semi-Arid, but the months are not equal. Summer heat brings faster bolting and heavier pest pressure, so pick a heat tolerant variety, sow little and often, and give afternoon shade from December through February.
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Current Growing Conditions
Soil temperature: 22.7°C (optimal range: 8–30°C) ✓ Ready to plant
Modelled from Open-Meteo forecast (Alice Springs), not a live sensor.
How to Grow Radish in Arid / Semi-Arid Australia
When to Plant
Plant March-September (autumn through winter/spring). Summer heat makes radish growing impossible.
- Soil
- Friable, well-drained soil with good moisture retention. Avoid heavy clay. Compost or aged manure improves results but do not use fresh manure which causes forking.
- pH Range
- 6.0-7.0
- Sunlight
- Full sun in cool months; light afternoon shade in summer to prevent bolting
- Spacing
- 5cm apart, 25cm between rows
- Watering
- Consistent moisture is critical. Radishes grown with irregular water become woody, pithy, and hot. Water lightly every 1-2 days in dry weather. Mulch to retain soil moisture.
Companion plants: Lettuce, Spinach, Carrot (as trap crop for flea beetle), Peas, Nasturtium
Avoid planting near: Hyssop, Other brassicas (to reduce shared pest load)
Arid / Semi-Arid Growing Tips for Radish
Recommended Varieties
- Cherry Belle
- White Icicle
- French Breakfast
Key Challenges
- Extreme summer heat
- Maintaining consistent moisture
- Pithy roots from heat stress
Pro Tips
- Grow as a cool-season crop only
- Drip irrigation or frequent light watering essential
- Heavy mulch to keep soil cool
Harvesting Radish
When ready: Round varieties: shoulder visible at soil level, 2-3cm diameter. Pull one to check. Summer types: harvest at 4-6 weeks before they become pithy. Winter/daikon types: harvest at 8-10 weeks when 15-25cm long.
How to harvest: Grasp foliage near the crown and pull gently. Water the bed beforehand if soil is dry. For daikon/winter types, loosen soil alongside the root with a fork first.
Common Radish Pests in Arid / Semi-Arid Zones
Organic prevention: Avoid planting brassicas in the same spot consecutively. Remove crop debris. Water regularly (flea beetles prefer dry conditions). Interplant with non-brassica crops. Trap cropping with mustard can dr
Where to next
Supermarket Price
Current average retail: $14.95/kg (12-month range: $9.95–$16.00)
Grow your own and save on grocery bills.
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Open the planting dashboard Join Garden BuddyCommon Questions About Radish
When do you plant radish in Australia?
It depends on your climate zone, not the calendar month alone. Planting months by zone:
- Tropical (Cairns): Apr to Jul
- Subtropical (Brisbane): all year
- Warm Temperate (Sydney): all year
- Cool Temperate (Melbourne): all year
- Cold / Highland (Canberra): Jan to Apr, Sep to Dec
- Arid / Semi-Arid (Alice Springs): all year
- Mediterranean (Perth): all year
Does radish grow all year round in Alice Springs?
Yes, every month is on the calendar for the Arid / Semi-Arid zone, though not every month is equally easy.
Which zone am I in?
Type your postcode into the box under the heading and the page tells you, and links this crop in your own zone if it differs. Or look it up on the grow zone map. This page is the Arid / Semi-Arid zone, Alice Springs is its reference city.