When to Plant Collards in Alice Springs — Arid / Semi-Arid Guide

Collards

Photo: Wikimedia Commons

Collards (also called collard greens or borekale) are a non-heading brassica producing large, flat, dark green leaves on sturdy stems. More heat-tolerant than cabbage and kale, and equally cold-hardy, making them one of the most versatile brassica greens for Australian gardens. The flavour is mild and slightly sweet, improving after frost exposure. Underutilised in Australia but gaining popularity.

Current Growing Conditions

Soil temperature: 27.9°C (optimal range: 8–30°C) ✓ Ready to plant

How to Grow Collards in Arid / Semi-Arid Australia

When to Plant

March-August. Avoid summer heat. Requires consistent irrigation.

Soil
Rich, well-drained soil amended with plenty of compost and aged manure. Tolerates heavier clay soils better than most brassicas.
pH Range
6.0-6.8
Sunlight
Full sun (6+ hours). Tolerates part shade, especially in warmer zones. Minimum 3 hours direct sun.
Spacing
60cm apart, 75cm between rows
Watering
Deep watering 2-3 times per week. Consistent moisture produces tender leaves. Drought stress toughens leaves and may trigger bolting. Drip irrigation ideal.

Companion plants: Onion, Garlic, Celery, Dill, Chamomile, Nasturtium (trap crop)

Avoid planting near: Strawberry, Tomato, Other brassicas in succession (disease buildup)

Arid / Semi-Arid Growing Tips for Collards

Recommended Varieties

  • Georgia Southern (most heat tolerant)
  • Vates

Key Challenges

  • Water demand
  • Extreme heat still stresses even heat-tolerant collards

Pro Tips

  • Shade cloth (30-50%) extends growing season
  • Drip irrigation essential
  • Mulch heavily to conserve moisture

Harvesting Collards

When ready: Leaves are large (20-30cm), dark green, and firm. Harvest from the bottom of the plant upwards. Leaves should snap cleanly when bent.

How to harvest: Cut-and-come-again: snap or cut lower leaves, leaving the growing tip and upper leaves to continue producing. Never harvest more than 1/3 of leaves at once.

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