Perfect Potting Soils for Perennials
Why Permanent Potting Soil is Best for Perennials
Plants that live more than one year (perennials) need permanent potting soil. Why? Because organic, non-permanent soils break down as they age and this decomposition in a plant’s root zone leads to root rot. Overwatering is not the cause of root rot. Decomposing compost or wood products are the cause of root rot. The roots of plants need to be in a highly aerobic condition and decomposing organic matter can lead to anaerobic conditions.
There are not too many permanent potting soils on the market. Matter of fact, we know of only one right now. It is produced by a great nursery in Santa Ana, California called Laguna Hills Nursery. Check out their Youtube for valuable information.
Permanent Potting Soils We Recommend
Make Your Own Potting Soil
Alternatively, you can make your own potting mix. If you are planting perennials in pots, try to use a 2:1 ratio of aeration to water retention. This could look like 2 parts pumice to 1 part peat moss. Another option could be 2 parts perlite to 1 part coconut coir. You want to make sure you have more aeration components because they are long-lived and promote good airflow in the root zone.