Securing an outdoor table on a sloped garden terrace can be challenging, but with the right techniques, you can ensure stability and safety. Here are the best methods to achieve this:

1. Use Adjustable Table Legs: Opt for tables with adjustable legs to compensate for the slope. This allows you to level the table surface easily.

2. Install Anchors or Straps: Secure the table to the ground using anchors or straps. Heavy-duty straps or ground screws can prevent the table from sliding.

3. Add Weight to the Base: Place sandbags or weights under the table legs to increase stability. This is a simple yet effective solution for mild slopes.

4. Create a Level Platform: Build a small wooden or stone platform to create a flat surface for the table. This requires some DIY effort but offers long-term stability.

5. Use Non-Slip Pads: Attach non-slip pads or rubber feet to the table legs to reduce movement on uneven surfaces.

By implementing these solutions, you can enjoy a stable and secure outdoor table on your sloped garden terrace. Choose the method that best suits your terrain and table type for optimal results.