White Marks like Salt on Pots
The 'White Stuff' Is a Buildup of Salts and Minerals.
It's commonly caused by the plant and pot becoming water logged - over watered, nutrient fed and poor drainage.
This combination of factors has resulted in plant being unable to draw up anymore water and the roots and soil are sitting in the surplus water in the bottom of the pot.
How to Get Rid of It
- Cut down on watering and check if the plant requires watering but pushing your finger into the soil to see if it is still moist below.
- Don't let the pots sit with water in the dishes at the base for a long period of time as this is the main problem.
- Always follow instructions on the fertilliser packets so that you dont over feed the plants.