Companion Planting: Off-Grid Aussie Survival Guide

By Jenny Mills · rural nurse & homesteader · health, safety, law and the paperwork of going bush

“After losing my first three carrot crops to carrot rust fly, I learned that planting dill just 30cm away is the only thing that keeps them alive.”

No fancy chemicals. No wasted space. Just plants that work together to keep your off-grid life running.

Nitrogen Fixers: Your Free Fertiliser

Legumes don't just grow beans. They feed your soil for free. Plant these near heavy feeders like tomatoes or corn.

• Native Pea (Daviesia) - Drought-hardy, fixes nitrogen in poor soils. Plant in spring. $3.50-$5.00 per seedling (TerraGreen, QLD).
• Chickpeas (Desi) - Grow in winter, cut and mulch. $1.20/kg (Woolworths, $1.20 for 500g packet).
• Beans (Runner) - Fast, massive yields. Plant before summer veggies. $1.50/50g packet (Green Thumb, NSW).

Tip: Chop and drop legume tops before flowering. They rot fast and feed the soil.

Pest Repellers: No Sprays Needed

Stop spraying. Plant these to scare off bugs. Works like a charm if you do it right.

• Garlic - Crushed leaves repel aphids. Plant around lettuce. $2.00 for 10 bulbs (IGA, $2 for 10-pack).
• Basil - Beats tomato hornworms. Plant near tomatoes. $2.50 for 5 plants (Farmers Market, Melbourne).
• Nasturtium - Sacrificial plant for aphids. Let bugs eat it instead of your veg. $1.80 for 10 seeds (Garden HQ, WA).
• Marigolds (African) - Root-knot nematode killer. Plant between rows. $0.90 for 50 seeds (Bunnings, $0.90).

Space Optimisation: Grow 3x More in Half the Area

Off-grid means no room for waste. Stack plants that complement each other.

• Tomatoes + Basil + Marigolds - Tomatoes climb, basil fills gaps, marigolds deter pests. Plant in 1m².
• Corn + Beans + Pumpkins - "Three Sisters" method. Corn for support, beans fix nitrogen, pumpkins shade soil. Use 4m x 4m patch.
• Carrots + Onions - Onions repel carrot fly. Plant in rows 10cm apart. Saves 30% space vs single crops.

Tip: Plant fast growers (radishes) between slow ones (potatoes). Harvest radishes before potatoes need space.

Australian Suppliers (No Bull)

Where to get seeds without paying $20 for a packet of lettuce:

Final word: Plant what works for your patch. Don't try to grow 20 things. Start with 3 plants: beans, basil, marigolds. That's it.

When to Call a Professional

While many off-grid projects are achievable as DIY, certain situations require licensed professionals:

• Electrical work beyond basic 12V DC additions — requires a licensed electrician
• Structural modifications to buildings or load-bearing elements
• Gas line installation or modification
• Solar array installations above safe voltage thresholds
• Any work that affects the structural integrity of your property

Always check local regulations and obtain necessary permits before commencing work.