Children love growing things like cress in a saucer, here’s another salad they can grow indoors.
Next time you buy a bunch of watercress, cut off the tops for your salad or garnish, and keep the thick stems.
Put these in a glass of water on the window sill and watch them put out strong white roots.
When these are sturdy enough (a few days will be enough), pot them in a medium sized plant pot, keep them on the window sill and water them (not too much, keep the soil moist but not wet) and in a week or two you can cut your next bunch of watercress for free.