Mycorrhizae have long been recommended for use to help outdoor crops and plants in gardens. Still, now the argument is also being made of the benefits of Mycorrhizae for houseplants, and a good reason.
The reality is that there are several houseplants with subtropical and tropical backgrounds that were able to survive due to Mycorrhizae's presence in their native habitats.
However, regular potting soil does not feature Mycorrhizae, which results in those particular houseplants requiring a lot more intensive care in terms of feeding and watering. Mycorrhizae's use means that plants have access to plenty of nutrients and will also make them a good deal more tolerant to drought.
While the use of beneficial fungi is not new, doing so indoors is a relatively new idea. Mycorrhizae can scavenge all the water and nutrients that are in any way available to them in the volume of local soil within a container, providing plant owners with a safety net in the event they are unable to fertilize or water their plants regularly.
Mycorrhizae can also assist with unlocking nutrients that can sometimes be difficult to otherwise extract from the soil. They can pull immobile nutrients such as iron and phosphorous nutrients from the ground and make them accessible to the plant.
The use of these fungi has also been known to make plants more robust.