Instructions
1. Water both plants well. Leave one plant in full sunlight. Place one plant on the floor of the cupboard.
2. Cover the cupboard with the blanket to exclude light.
3. Turn the plant pot on it's side and wait 2-3 days.
4. You should find that the plant stem has 'bent', i.e. growing vertically again.
5. Place the plant pot inside the plastic bag and tie the ends around the plant stem (to trap the soil)
6. Tip the plant pot upside down and see if it tries to grow vertically again