Container Gardening
Q.

Outdoor potted plants

Zone 77042 | lobatojuan added on February 5, 2016 | Answered

How often must the soil be replaced in an outdoor potted plant?

A.
A.Answers to this queston: Add Answer
Downtoearthdigs
Certified GKH Gardening Expert
Answered on February 6, 2016

Every year or two you should replant the plants in fresh potting soil to ensure a steady stream of nutrients.
If the plants roots are growing in circles, your plant will need a larger pot.
Succulents and cactus grow much more slowly and can go longer before repotting.
If the plants are fast growing, they may need larger pots more often.
A general rule is to go up 1" in pot size.

https://www.gardeningknowhow.com/plant-problems/environmental/root-bound-symptoms.htm

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