"Robertsnpt" wrote in message
...
Im building a rockery ...Our soil is like clay. Which compost should i use
to
help breAk it up.T here are so many different sorts.!

Dig it out and replace it.
If you use a sharp sand and compost mix it will drain quite well and suit a
whole range of rockery plants.
I prepared just such a rockery for the missus - she had never touched the
soil before, but after just a year she has made it look stunning with a
variety of plants "knitted" together and flowering through the seasons.