Using indoor potting soil for outdoor potted plants is not recommended. Although in some cases it may work, outdoor potting soils are specifically designed to provide the right balance of nutrients and moisture for outdoor plants.
Indoor potting soil is generally lighter and less dense than outdoor potting soil, meaning it can dry out more quickly. Additionally, it is often composed of different materials with different nutrient compositions than what is ideal for outdoor plants. As a result, indoor potting soil may not provide enough nutrients and water retention for plants grown outdoors.
One potential advantage of using indoor potting soil for outdoor potted plants is that it tends to be cheaper than outdoor potting soil due to its lower nutrient content.
However, this cost savings may be offset by the need to fertilize more frequently in order to keep your plants healthy and thriving.
In general, it is best to use an appropriate outdoor potting soil when planting in containers outdoors. Outdoor soils are designed to resist compaction and retain moisture while providing the right balance of nutrients for your specific plant species. If you do choose to use indoor potting soil, you should supplement it with fertilizer and mulch regularly in order to ensure your plants have the nutrition they need.
In conclusion, using indoor potting soil for outdoor potted plants is not recommended as it does not provide the necessary nutrients or moisture retention needed by these plants. It may be cheaper initially but could lead to additional costs in the long run due to needing more frequent fertilization and mulching. For best results, use an appropriate outdoor potting soil when planting in containers outdoors.