I put little packets of cress seeds in the party bags for big boy's party and today he asked to plant his seeds. I used an old strawberry punnet that was destined for the recycling and layered it with blue and red tissue paper, giving each layer a squirt of water with the plant spray. (This is never used for plants, only for big boy to soak things in the garden!)
We then sprinkled the seeds and lay one last piece of tissue on top.
Just have to wait and see if we have some cress by the Jubilee!