Worms, worms, worms. Kids love 'em or hate them.
Dig up some worms from your garden or worm farm, then serve up this information on worms to surprise your kids.
Did you know:
Worm poo experiment
- Worms are hermaphrodites (neither male or female). Each worm has both male and female sex organs.
- Worms have no eyes, but can sense vibrations, light and temperature through special organs in the skin.
- Worms wriggle around when you dig then up because they are trying to escape the light.
- Worms breathe through their skin and expel urine through special pores.
- Worms have skin that is permeable which means water can pass through it.
- Adult worms can produce up to 12 babies per week
- If worms donâ€™t like the conditions around them they will try to leave. If they donâ€™t find a new home in composted material they will die.
- The worm has a long gut running from one end to the other. It is like a big muscle that squeezes food particles and dirt until the nutrients are absorbed. Whatever the worm canâ€™t absorb is passed out as castings.
- Worms from your garden are different to worms used for composting in worm farms.
Does worm poo make plants grow faster than artificial fertilisers?
Try this experiment to find out for yourself...
- 3 yoghurt tubs (ensure there are a few small holes at the bottom of the tubs)
- permanent pens
- garden soil
- grass seeds (or whatever seeds are available)
- grass fertiliser
- worm castings (from your worm farm)
- plastic teaspoon and tablespoon
- Fill each tub with garden soil.
- Label them Tub 1 (Worm poo), Tub 2 (Fertiliser) and Tub 3 (No fertiliser, no worm castings).
- In Tub 1, mix the soil with one tablespoon of worm poo.
- For Tub 2, read the instructions on the pack of grass fertiliser and work out roughly how much to add to the soil in the yoghurt tub. Mix the fertiliser into the soil.
- Tub 3 is the control tub and will have no fertiliser or worm castings.
- In each tub, spread the top of the soil with half a teaspoon of grass seeds and press seeds into the soil a little.
- Water the soil with three tablespoons of water (more water is needed if soil is dry).
- Place the tubs next to the window or a place where there is sunshine.
- Water the soil everyday with 1-2 tablespoons of water. If the soil looks very dry, add more water.
- Keep the experiment going for 3-4 weeks and record your observations