If you’re lucky enough to have a natural slope, you’re already half way there. To create your own rock garden using the English model, first choose a location that’s in full sun as much of the day as possible. This south-facing slope uses red lava rocks to create the structure for a succulent collection at the Huntington Botanical Garden in Pasadena, CA. This is the perfect model for creating a rock garden in outdoor living spaces where succulent plants grow up close and personal. The English plant their gardens with a huge assortment of cold-hardy alpine succulents that originate in the Alps, above the timber line. In England it rains often, yet they get around the soil problem with rock gardens created on slopes or as mounds built around rock or boulders. All you need to do is create a specialized elevated garden space with high porosity. This may be a challenge in many areas east of the Rockies where clay soils and summer rains predominate, but those in even wetter climates manage it. No matter where you live, you can have a garden filled with hardy cacti and succulents of your own.
The goal is to simulate these soils and growing environments. You’ll even find them thriving high on cliffs, rooting into thin fissures with almost no soil at all. For example, in the American Southwest cacti like dry washes were soils are little more than sandy gravel. Cacti love to live in tiny gaps between rocks, where drainage is rapid and fertility low.Ībove all, succulents and cacti need porous ground, comparable to what you would find in the deserts of southern Africa, Mexico or the American Southwest, where many originate.
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