Anchoring an outdoor sofa on a grassy slope can be tricky, but with the right techniques, you can ensure stability and safety. Here are the best methods to secure your furniture:

1. Use Ground Stakes or Anchors: Heavy-duty stakes or auger-style anchors can be driven into the ground at an angle to hold the sofa legs firmly. Opt for rust-resistant metal stakes for durability.

2. Sandbags or Weighted Bases: Place sandbags or weighted bases under the sofa legs to add stability. This is a quick, non-invasive solution for temporary setups.

3. Interlocking Patio Tiles: Lay interlocking tiles or a flat platform beneath the sofa to create a level surface. This reduces wobbling and provides better grip.

4. DIY Concrete Footings: For a permanent solution, dig small holes, pour concrete, and embed anchor bolts to attach the sofa legs securely.

5. Tie-Down Straps: Use weather-resistant straps to connect the sofa to nearby trees, posts, or fixed structures for added security against wind or movement.

Always check the slope’s angle and soil type before choosing a method. Combining these techniques can enhance stability, ensuring your outdoor sofa stays put even on uneven terrain.