We're planning to use gravel in a large section of our garden instead of mulch. Have seen it can look effective surrounded by drought-tolerant plants like succulents and should reduce/elimate the need to water. But a friend has warned me that gravel retains rather than reflects heat and can bake the roots of any plants you might have. For those that already have gravel gardens, have you found it difficult to keep your plants alive? Has it reduced your water bill?
