Grass earthworm

How to Make a Growing Earthworm

Grass earthworm

Here’s a fun DIY early years activity that combines scientific exploration with creativity (just like our sustainability incursions). You’ve probably made grass heads before. But have you tried making a grass earthworm? We recently ran this activity at our early years sustainability workshops with Moonee Valley Libraries. It was such a hit we thought we’d share this guide so you can do it at home with your kids or at your early learning service. This activity is suitable for 3-5 year olds.

This is a fun science experiment for kids to practice their fine motor skills, from spooning the seeds and soil into the stocking, to practicing trimming the growing grass. It teaches children about the growing cycle and how to care for plants. It also introduces children to the biology of earthworms. Earthworms are amazing creatures! They eat our food waste and turn it into plant food. You can use this activity to explore the topic of earthworms and worm farming with children. Children can make their own segments on their worm and think about how earthworms move. Did you know earthworms also have hair-like bristles called setae used to grip and move? Kids can unleash their creativity in decorating the worm. This activity ensures guaranteed excitement as they watch the grass seeds germinate and grow through the stocking!

Read on below for a step-by-step guide on how to make your own hairy earthworm.

EYLF OutcomesElaborations
OUTCOME 2: Children are connected with and contribute to their world* Children become socially responsible and show respect for the environment
OUTCOME 3: Children have a strong sense of wellbeing.* Children take increasing responsibility for their own health and physical wellbeing. They have access to a range of materials to develop their fine and gross motor skills
OUTCOME 4: Children are confident and involved learners* Children develop dispositions for learning such as curiosity, cooperation, confidence, creativity, commitment, enthusiasm, persistence, imagination and reflexivity
* Children develop a range of skills and processes such as problem solving, enquiry, experimentation, hypothesising, researching and investigating
Links to the Australian Early Years Learning Framework: Belonging, Being and Becoming

How to make your own growing earthworm – Materials required

  • Old stockings, tights, pantyhose or socks
  • Potting Mix or compost
  • Any seeds that grow quickly like lawn grass, wheat grass, sprouts or cress
  • Twine, string or elastic bands
  • Plastic cup or vessel with bottom cut out
  • A spoon
  • Anything to decorate your worm! i.e fabric pen


Find some old stockings or socks. If you don’t have any, you can usually find these at op shops. You can make at least 2 earthworms out of each leg of the stocking, depending on the desired length of your worm. Have one end open and one end closed – tie off one end if necessary.

*Tip: If you want to make sure you can compost your worm after you’re finished with it, you’re going to need do a bit of research about the material. Most pantyhose are made out of nylon which doesn’t biodegrade. There are lots of biodegradable pantyhose and socks out there if you don’t want to create any waste from this activity. Alternatively, you can clean and reuse the stockings after the activity e.g., for cleaning, gardening or making hairy worms again!

Potting mix

For this activity we used Osmocote Seed & Cutting Premium Potting Mix from Bunnings, but any good quality potting mix or compost will do.


A large spoon to add seeds and soil into the stocking.


You can get small boxes of grass seeds from Bunnings or any nursery or hardware store. If you’re looking for options that kids can eat, try wheat grass, sprouting seeds or microgreens.

Twine or string

This is to tie your earthworm off into sections. We recommend natural twine or string that can biodegrade.

A funnel

We’ve used an old plastic cup with the bottom cut out. It’s very tricky for kids (and adults) to hold the stocking open and also spoon in soil and seeds. The funnel will make it easier for kids to do the activity without 1:1 adult support. Look through your recycling bin to find something you can clean and reuse to make a funnel e.g., small plastic bottles or containers.


Go wild! We decorated ours with used pipe cleaners and drew the face with a paint pen.

Spray bottle

Optional (to keep the earthworm moist as the seeds germinate). You can also sprinkle water on your worm with a cup or your hands, or do bottom watering so the water is soaked up into the soil.

A container

To keep and catch the soil as you’re spooning it in.

Steps to making a hairy earthworm

Step 1 – Set up

Insert the cup or funnel into the open end of the stocking and scrunch/pull the stocking up over the cup until it hits the closed end.

Step 2 – Add seeds and cover with soil

Pull the end out slightly so there is a bit of loose stocking. With the stocking laying horizontally, spoon your seeds into the open cup so they cover the bottom of the stocking. Pour soil over the top of the grass seeds until the seeds are completely covered and the section is quite full. Lift the worm up to move the seeds and soil down. If you want to have seeds sprout at the top like ours, stick to adding the seeds in the same bottom position. If you lose track, you can usually see the seeds easily through the stocking to check. If this is too tricky, mix your seeds into your soil before you start and spoon it in altogether. The seeds will then sprout in all directions rather than just on top.

Step 3 – Continue filling up the stocking bit by bit

Continue pulling the closed end of the stocking gradually off the funnel in small sections. First add seeds to the bottom, then soil on top. Lift the worm up vertically every now and then so the seeds and soil keep filling the worm (for a plump worm). Repeat this until the worm is filled to your liking. Remove the funnel when you get close to the end of the stocking. Leave room to tie off the open end of the worm with a knot.

Step 4 – Make your earthworm segments

Cut some pieces of string, twine or old material. Tie these into worm sections. Tying a knot can be challenging for young kids. An easier way for kids 3-5 years old is to use old rubber bands so they can make the sections themselves.

Step 5 – Decorate

It’s time to decorate! Position your earthworm so it is lying with the seeds at the top and the soil at the bottom (if you combined the seeds and soil together beforehand, don’t worry about this step). Add a little face to your earthworm with whatever materials you can find.

Step 6 – Water and wait

Spray the top of your earthworm with water (where the seeds are). You could also gently pour some water over the top if you don’t have a spray bottle. Or if your earthworm is in a container, add some water to the bottom and the water will be soaked up. Remove leftover water in between watering. Keep your earthworm moist throughout the germination period and provide the right amount of light (for the seeds you are growing).

Step 7 – Watch it grow!

If you are using lawn grass seeds, you should see your seeds start to germinate around 5-7 days and then sprout during the week following.

Grass earthworm sprouting
It’s so fun watching the seeds poke through the stocking and begin to grow!

We love it when people share their photos with us…how awesome is this grass earthworm made by Kevin’s granddaughter at our worm farming workshop with Moonee Valley Libraries!

Grass earthworm
Look at this giant grass worm made by Kevin’s granddaughter!

We offer a range of fun, sustainability activities for early childhood including hands-on workshops for libraries and community events, and incursions for playgroups, childcare centres and kindergartens. Please get in touch if you’d like more information.

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