Building rubble blooms in new gardens

Gardeners are discovering the benefits of 'rubble gardens': gardens built on construction waste such as concrete, gravel and sand instead of soil. At the Horniman Museum in London, head horticulturist Errol Reuben Fernandes used 25 tons of waste concrete to transform the entrance gardens into a drought-resistant space full of xerophytes from the Mediterranean region, Peru, Chile, Bolivia and Mexico....