Using an old Belfast sink to grow alpines in it for a garden feature. When we have done this we have scuffed the sides and then rendered it will a mixture of sand, cement and peat mixture. Then when its set we have pained on milk to get algae and mosses to grow, this creates the effect of an old stone trough.
We normally fill our sinks with John Inness compost with a third more grit or sharp sand mixed in to make a very free draining mixture.
Suitable plants are some of the dwalf conifers, iberis, saxifraga, carex, festuca, dianthus, sedum, thymes