This is a great way to learn how to upgrade your small house plants into bigger ones. Start over plants once a year. Put rocks on the bottom for drainage. Bugs help your plants to grow. Do not use Pesticides on your house plants. Water weekly. Compost bins make great soil. Sweet potatoes that have roots growing off of them put in a glass of water and wait for them to grow roots. Give you plants at least six hours of sunlight daily. They also like when you talk to them and touch them you can clean them. A damp cloth can be used to do so.