Rhubarb pie stains on outdoor furniture cushions can be stubborn, but with the right approach, you can restore them to their original condition. Here’s a step-by-step guide to tackle these stains effectively:

1. Blot the Stain Immediately: Use a clean cloth or paper towel to gently blot the stain, absorbing as much of the rhubarb pie as possible. Avoid rubbing, as this can spread the stain.

2. Prepare a Cleaning Solution: Mix a tablespoon of dish soap with two cups of warm water. For tougher stains, add a teaspoon of white vinegar or baking soda to the mixture.

3. Apply the Solution: Dip a soft brush or sponge into the solution and gently scrub the stained area in circular motions. Let it sit for 10-15 minutes to break down the stain.

4. Rinse Thoroughly: Use a damp cloth to rinse the area with clean water. Repeat the process if necessary.

5. Dry Completely: Allow the cushion to air dry in the sun, as sunlight can help eliminate lingering odors and bacteria.

For persistent stains, consider using a specialized upholstery cleaner or a mixture of hydrogen peroxide and water (test on a small area first). Regular maintenance and prompt action will keep your outdoor cushions looking fresh and stain-free.