If you want to transplant these slips (dunno why they are called like an accident involving banana peels) in earth you need to cover their bases with water so that they grow roots. I would just lay down the whole potato into a flat bowl of water so that it is covered ½ with water.Except the person asking because they grew up with cm. I think the sqeet potatoes have the prettiest leaves when they are bigger. I only learnt recently they grow vinesView attachment 2468104
Once the slip has grown roots you can break it off carefully and transplant it into the ground where it will grow vigorously. The sweet potato will produce more slips until it has exhausted its nutrients and will collapse in itself and start to rot.
Warning: In some parts of the world with warm, frost-free and humid climate, it may not be allowed to grow sweet potatoes outside of containers due to their incredible fast growth and ability to outcompete native plants. Make sure that your part of Australia does not have limitations on growing sweet potatoes.
Sweet potato plants creep and climb up to 10 meters high (that is almost 33 stinky King George Ⅲ feet, @duluthralphie) and produce beautiful white and pink flowers. Both the flowers and the leaves are edible too, though older leaves might be a little too tough for humons. - That will not stop your duckies from devouring the plants whole!
Is that a pineapple top in the glass beside the sweet potato?!
I grew one too in Houston, but sadly it did not survive the moving truck.