Open your patio umbrella and determine if you can remove the fabric from umbrella. If you can remove the fabric, do so for easier cleaning.
Mix a cleaning solution of warm water and mild soap, such as dish-washing soap, in a bucket.
Wet the umbrella with a hose.
Wipe the pole and other hard surfaces down with a cleaning rag soaked in the warm, soapy water.
Use a cleaning brush and the soapy water to scrub dirty areas of the umbrella fabric.
Rinse the entire umbrella with a hose.
Allow the umbrella to completely dry in the sun before closing or storing it to prevent mildew.