It's not hard to start changing our gardening practices and becoming a little more organic in our thinking. Actually, it can be as simple as turning a few storage tubs into a fully-functioning worm farm.

Sure, you could race down to your local hardware and pick one up for between $70-100 or get Amazon to send a Can-O-Worms (aff.) out to you.

But, if you're into saving a few dollars and don't mind doing some of the work yourself you can get started with a tub worm farm using these DIY plans [PDF], for less than $40.

All you require is two Plastic Recycling Tubs (aff.) and lid, a piece of wood, some fine mesh and a few screws. And a few worms.

You can start the stack with only 2 plastic tubs - even though it's recommended that you begin with three - and enlarge later if you choose. Basically you need one storage bin for the first level and then another on top for the worms to escape.

The only proviso in using two tubs for your worm farm instead of three is that you will need to be more vigilant in harvesting the castings and keeping the temperature right. As the worms travel upstairs into the next tub you will know it's time to remove the worm fertiliser and store or use on your garden.

Then the bottom tub becomes the new top tub as you replace the organic bedding encouraging your worms to continue their journey.

It's a very simple system that has proved its worth for gardeners for many years. In fact, it can be even cheaper if you already have the materials stored around your home.

So, rather than reaching for that brand-name fertiliser, start to make your own and recycle some of your waste products at the same time.