Installing stone sculptures in soft ground requires careful planning and proper anchoring techniques to ensure stability and longevity. Here are the most effective methods:

1. Concrete Footing: Dig a hole deeper than the frost line and pour a concrete base. Embed rebar or metal brackets to secure the sculpture. This distributes weight evenly and prevents shifting.

2. Ground Screws or Helical Piers: These screw-like metal rods provide deep anchoring in loose soil. They are ideal for large sculptures and can be adjusted for leveling.

3. Gravel and Compacted Base: For smaller sculptures, a layered base of gravel and sand improves drainage and stability. Compact each layer firmly before placing the sculpture.

4. Geotextile Fabric: Placing this fabric beneath the base prevents soil erosion and maintains ground integrity over time.

5. Cross-Bracing for Tall Sculptures: Use metal supports or cables to anchor tall or heavy sculptures, especially in windy areas.

Regular inspection and maintenance ensure the sculpture remains secure. Choose the method based on soil type, sculpture size, and environmental conditions for optimal results.