A Riddle of Alpine Plants

When it comes to choosing the plants, it is essential to select compatible varieties in terms of flowering times and growing conditions, as well as matching growth rates to avoid one plant enveloping another. Situation is also key. A hot, unshaded south-facing position — maybe on a gravelled patio or paved courtyard — is ideal for succulent plants such as sempervivums, sedums and echeverias. However, a situation that receives morning sun, followed by afternoon shade, will allow a more balanced arrangement of perennial, evergreen alpines with attractive foliage that quickly tumbles over the rim of the riddle. Originating from rocky mountain slopes, many alpines have foliage that may be damaged by close contact with damp soil over a long period, so spread a handful of gravel beneath each to create an invisible barrier.