We are having a sunflower race. The children planted a sunflower seed each about two weeks ago as part of an activity I prepared for toddler group. This is a really easy activity. You need; plastic cups or plant pots, sunflower seeds, compost, water. Fill the cups/pots with compost and push a seed into each cup/pot. Water and place on your windowsill. Your seed should sprout in around a week.