4. Don't throw out the water your boil your eggs in. This water contains tons of calcium that your plants will love. Just let the water cool and dump it on your plants. I also save my egg shells, rinse them out real well, smash them up then mix them with dirt and/or potting soil before planting any plants. For someone who doesn't have a green thumb, I have had great success with this.
Epsom salts are used in the garden as a natural source of magnesium, particularly for roses, tomatoes, and peppers. The extra magnesium is believed to make the plants bushier and greener, with more blooms and abundant veggie yields.
Instead of buying plant food for fertilizing your houseplants, try amending ordinary potting soil with Epsom salt and coffee grounds. Epsom salt supplies magnesium and lowers the pH of potting soil, making it easier for plants to absorb other nutrients.