How to fertilize indoor plants?
Plants need balanced fertilizer to grow well
Fill your pot with a balanced, 10-10-10 fertilizer. Most houseplants thrive in balanced 10-10-10 fertilizer. House plants need the nutrients from potting soils and fertilizers in order to survive. If you don’t repot the plant, or add new nutrients to the soil, the plant will eventually die. The first number stands for nitrogen, second number for phosphorus, and the third for potassium.
If you have a flowering plant, you can buy a fertilizer that is high in potassium.
If you have a foliage plant, you should get a fertilizer or potting soil high in Nitrogen.
Plants also require micronutrients that need to be replenished by adding potting soil or fertilizer in order to survive.
Cacti or succulents require a special potting mix specifically designed to drain water efficiently. They also need pots with plenty of holes on the bottom. These prevent too much moisture from being held in the soil, which can kill the plants.