Concrete stains can provide a rich and unique color to an otherwise plain surface, but staining concrete with traditional methods can be a daunting task. Using natural products such as iron sulfate or copper sulfate to stain concrete is an easy, economical and environmentally friendly way to give old concrete a new look.

Step 1: Use a mild detergent and a scrub brush to clean the concrete thoroughly. Every imperfection will show through the stain. It is imperative that the surface is as clean as possible to start with.

Step 2: After the first cleaning, use a putty knife or scraper to remove dried paint, dirt and other debris. Use a citrus-based degreaser to remove oils and greasy residue.

Step 3: Fill any cracks or divots with a concrete patching product. Let the product cure completely before staining.

Step 4: Clean the surface one more time. Rinse with clear water and sweep the area with a stiff broom.

Step 5: Use duct tape and plastic to protect surrounding surfaces from the stain.

Step 6: For a light orange or terra cotta color, mix 1/4 cup iron sulfate with 2/3 cup warm water. Iron sulfate is also known as ferrous sulfate or copperas and can be found in most hardware stores or garden centers alongside the fertilizers. For a darker stain add a couple of tablespoons of strong coffee to the mix.

Step 7: For a bluish green stain, mix 1/4 cup copper sulfate with 1 cup warm water. Cooper sulfate is sold as root killer in the plumbing aisle of most hardware stores.

Step 8: Wear protective clothing and avoid inhaling any fumes.

Step 9: Apply the stain solution with a brush, sponge, mop or garden sprayer. Work in small sections at a time, mixing more stain as needed.

Step 10: Allow the solution to dry. Wipe up excess stain and residue with a sponge or mop.

Step 11: For a deep, darker color, apply a second coat. With a third coat very little stain will absorb. The extra moisture may cause efflorescence (white salt deposits) on the concrete surface. If this happens, scrub the surface with a stiff brush and rinse with clear water.

Step 12: Rinse the surface thoroughly with clean water. Once the surface is dry, apply a concrete sealer. The sealer will protect the concrete and darken the stain, giving it a rich, finished look.

— Have a home improvement question for the Fix-It Chick? Email it to Linda Cottin at features@ljworld.com.