Recent heatwaves have put pressure on home gardens, leading many to rethink their plant choices. Instead of traditional species that require more water, gardeners are increasingly turning to drought-resistant plants. Experts, including the French Office for Biodiversity (Ademe) and horticultural professionals, advise gardeners to assess their soil's drainage, sunlight exposure, and local climate before making changes. This evaluation helps in selecting plants that are better suited to endure dry periods while matching the garden's unique conditions.
Creating a dry garden involves preparing the soil by loosening it to encourage root growth and improve its ability to retain moisture. However, fertilizing is generally unnecessary. Replacing traditional lawns with permeable planting beds can reduce soil compaction and allow water to seep in more effectively. Gravel paths are a practical choice, offering structure and easy movement without compromising the garden’s drainage system.
Choosing smaller, resilient plants is recommended, as they adapt more easily to soil conditions and develop root systems gradually. In France, autumn is considered an ideal time for planting, as cooler temperatures and rainfall help plants establish themselves before the dry season. Mediterranean plants are especially favored for dry gardens due to their natural ability to conserve water. These plants often have distinctive features, such as fuzzy, glossy, or gray-silver leaves, which help reduce water loss. Native plants and those with the "Local Vegetal" label are also encouraged, as they are naturally adapted to local conditions, requiring less water and maintenance.
Watering is crucial in the first year after planting to help new plants develop strong root systems. Mulching is another essential practice, as it reduces evaporation and helps the soil retain moisture. Ademe recommends an organic mulch layer of 3 to 5 centimeters, while the Royal Horticultural Society suggests a mineral mulch of 5 to 7.5 centimeters of gravel for Mediterranean plants. These practices support the long-term health and sustainability of dry gardens.
One well-known example of a successful dry garden is the Beth Chatto garden in the United Kingdom, established in 1992 to replace a sun-damaged grass area. This garden relies on drought-resistant plants and receives about 500 millimeters of rain annually without the need for irrigation. The approach emphasizes placing the right plant in the right spot based on soil type, such as grasses for sandy soil, lavenders and carnations for calcareous (chalky) soil, and heaths and yuccas for rocky, well-drained areas. This method has become a model for sustainable, low-maintenance gardening in dry climates.
Adapting Gardens to Drought: Steps for Creating Resilient Landscapes
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