Posted: 31/05/2016 at 07:19
The old shrubs will have impoverished the soil. Dig as much compost or well rotted barnyard manure in as you can get. Make sure any perennial weed roots are removed before you replant. Add a good handful per square yard of blood fish and bone to the soil, before you replant. You might want to check the pH level to see whether the soil is acid or alkaline.