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Food & Health

From Soil to Supermarket: The Invisible Journey

Ages 8–12 20 min read Beginner

You pick up an apple at the supermarket. It's shiny, perfect, and costs about $1. But that apple has been on an incredible journey — from a seed in soil, through farms, trucks, warehouses, and sorting machines — before it reached your hand.

Most people have no idea how their food gets to them. Let's trace the journey.

The Journey of an Apple

Step 1: The Farm

An apple tree takes 4-8 years to produce its first full crop. Australian apple farms are concentrated in Victoria (Goulburn Valley), Tasmania, and Western Australia. Modern farms use precise irrigation, soil monitoring, and integrated pest management.

Step 2: Harvest

Most apples in Australia are still hand-picked — machines damage the fruit. Seasonal workers (often backpackers on working holiday visas) do much of this work. Harvest season runs from February to May.

Step 3: Packing Shed

Apples are washed, sorted by size and colour (using optical scanners), waxed (to make them shiny and extend shelf life), and packed into boxes. Up to 30% of apples are rejected at this stage for cosmetic imperfections — they're perfectly edible but don't look "perfect enough."

Step 4: Cold Storage

Apples can be stored for up to 12 months in controlled atmosphere (CA) storage — rooms with reduced oxygen and increased CO2 that slow ripening. The "fresh" apple you buy in October may have been picked in March.

Step 5: Transport

Refrigerated trucks carry apples to distribution centres, then to supermarkets. An apple grown in Tasmania and sold in Darwin travels over 4,000 km.

Step 6: The Shelf

At the supermarket, the apple is displayed under specific lighting (to enhance colour), misted with water (to look fresh), and priced. You pick it up, and its journey of months and thousands of kilometres ends in about three bites.

How Far Food Travels

The average Australian meal contains ingredients that have collectively travelled over 70,000 km (CSIRO estimate). That's nearly twice around the Earth — for a single meal.

Tonight's Question

"Look at everything on our dinner plate. Where did each ingredient come from? How far did it travel to get here?"

Check labels. You might find ingredients from 5+ countries in a single meal.

Trace Your Dinner

  1. Pick one meal your family eats this week.
  2. For each ingredient, research: where was it grown? How far did it travel?
  3. Calculate total food miles for the meal.
  4. Map the journey of each ingredient on a world map.
  5. Challenge: could you make the same meal using only Australian ingredients? Only local ingredients (within 200km)?

Go Further

  • Visit: A local farm or farmers' market. Talk to a farmer about their process.
  • Research: How does controlled atmosphere storage work? How does it affect nutrition?
  • Book: The Omnivore's Dilemma: Young Readers Edition by Michael Pollan (2015).
  • Question: If 30% of apples are rejected for looks alone, what happens to them?

What We Simplified

  • Supply chains vary enormously. Local, seasonal produce travels much less. Not all food has a 70,000km journey.
  • Technology helps. CA storage means less food waste by extending availability. Without it, we'd only eat apples for 3 months of the year.
  • The wax on apples is food-safe. It's typically shellac or carnauba wax. It's not harmful — just unfamiliar when you learn about it.

Sources

  • CSIRO. "Food Supply Chain." CSIRO
  • Hort Innovation Australia. "Apple and Pear Industry." Hort Innovation
  • Pollan, M. (2015). The Omnivore's Dilemma: Young Readers Edition. Dial Books.
  • NFF (2023). "Farm Facts." NFF

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