Can you top up soil in pots?
The pots are to large to repot the plants.
Normally you would add the potting mix to the bottom of the pot simply because it is not a good idea to cover the surface roots of the plant with soil as those roots are used to have a flow of oxygen around them. A light covering of soil will not affect the health of the plant, especially if the surface roots are exposed. If you are unable to repot your plants, keep them as healthy as possible by applying a seaweed solution once a month and adding a slow release fertiliser twice a year.
Answered: 23 Jul, 2012