Liquid Wormcast fertiliser (or Vermicompost, Biohumus, take your pick) is extract fertiliser taken from Wormcast Compost. It takes all the goodness produced by worms and packs it into a dilutable solution.

It's crammed with macro- and micro-nutrients, meaning your plants will grow faster, healthier and your crops will be tastier. They’ll even have lots more vitamins, proteins and sugars than normal.

There's enzymes, soil antibiotics, vitamins, growth hormones like Indole-3-acetic acid (IAA), kinetin, gibberellin and soil conditioners such as humates and fulvates. In short, all those nutrients will be easily absorbed by your plants.

You simply dilute the chemical-free solution in the watering can and use every 10 days to nourish plants' needs in the most natural way possible. This stuff definitely needs a place in your shed.