Mushrooms are a popular fungus packed with nutrients, and they taste amazing on toast. Ever wondered if you could grow your own mushrooms at home? The answer is yes and it’s easier than you think!
Whether you’re an experienced gardener or just someone who loves mushrooms on toast, growing your own fungi is a fun and rewarding project.

How to grow mushrooms
Step 1. Choose Your Mushroom Type
Some mushrooms are easier to grow than others. Oyster mushrooms and white button mushrooms are simple to grow for beginners.
Step 2. Pick a growing method
There are two ways to grow mushrooms. The simplest way is to use a mushroom grow kit which you can purchase from Bunnings. The second method is more involved, creating your own mushroom grow kit.
Guide to making your own mushroom growing kit
What you need
• Mushroom spawn (like oyster or button)
• A substrate (e.g. straw, sawdust, or coffee grounds)
• Containers (buckets, bags, or jars)
• A spray bottle (for keeping humidity high)
Instructions using straw as a Substrate
- Cut straw into small pieces and soak in hot water (around 70°C). This will kill bacteria.
- Let the straw cool and drain thoroughly.
- Place your straw into a bowl
- Mix your mushroom spawn into the straw evenly.
- Put the straw and mushroom mixture into a bucket or bag with small air holes.
- Incubate the mixture by storing it in a warm, dark place (around 22°C) for 2–3 weeks. The mycelium will spread and turn the straw white.
- After 2-3 weeks, when the straw has turned white, move the container to a light and humid like a bathroom or covered tub.
- If you are using a bag, ensure there is enough room for the mushroom to grow out.
- After about 5–7 days in the light area, your mushrooms will be ready to pick and eat.
Tips for Growing Success
- Ensure a humid growing environment. Mushrooms love moisture. You can mist them by using a spray bottle filled with water.
- Always wash your hands and tools to avoid contamination.
- Don’t wait too long to harvest. Harvest just as the cap begins to flatten out.
You can purchase mushroom grow kits, spawn, and containers from your local garden store or Bunnings. If you’re new to mushroom growing, starting with a grow kit can be a great way to build confidence before creating your own grow kit.
Step 3. Enjoy your mushrooms!
Growing mushrooms is like magic- you go from a bag of straw to a crop of beautiful, edible mushrooms in just a few weeks. It’s a great way to connect with your food, reduce waste, and enjoy a delicious and nutritious ingredient.
Once your mushrooms are ready, why not try them in our mushroom toast recipe!
-By Hannah Porter, Dietitian Baker Institute 🌱