6. Fill Your Watering Can With Rusty Nails
Supplies needed: a watering can and rusty nails
Making Cost: $0*
Iron deficiency causes a disease called iron chlorosis in plants, which depends on iron for survival. Their leaves will turn yellow while the veins stay green if they have iron chlorosis.
Put Rusty Nails in Your Watering Can / Shutterstock / I Am a Stranger
Put rusty nails in a watering bucket to help your plants that are low in iron. They will get all the iron they require from this, preventing iron chlorosis. Just be cautious and wear gloves when working with the nails to avoid having to receive a tetanus injection.