Animals can be a joy, but their deposits left on yard plants and bushes can leave a bitter smell that lasts for days. The smell of urine on yard ferns is easily remedied by a quick solution available in most home and garden centers and department stores. Getting rid of urine smell on yard ferns is a simple process that does not require specialized skills.
Gently turn the yard fern over on its side on a grassy area.
Use your garden hose to rinse the urine from the yard fern. Focus the spray directly onto the plant, avoiding the soil, as you do not want too much water seeping into the soil.
Sit the fern upright and allow to rest for 15 minutes.
Fill an empty and clean spray bottle with 1 cup room temperature water.
Add 1/2 tsp. of tea tree oil to the spray bottle. Shake well.
Spray the tea tree solution from a distance of 6 inches, at the base of the fern. Spray all the way around the fern so the scent of tea tree is absorbed into the soil. Tea tree is a natural herb that has a strong aromatic odor to mask the urine smell, and will naturally detract animals from further urination on your yard ferns.
Leave to dry, do not rinse off. Repeat as often as necessary for all of the yard ferns in your lawn.