Depending on the weather conditions, wood needs a decent polish at least once a year. We would recommend to do this before Spring and before Winter, if your furniture is outside the whole year round. Pick one of those humid, cloudy days, as it is better for the moisture level in the wood to dry out slowly after cleaning. For a thorough cleaning, we can recommend our Extremis Wood Cleaner
. This is a bio-degradable cleansing shampoo for wooden furniture. The product removes grey discolouration, green deposits and dirt. Should any cracks appear, you can simply sand them down by hand using 80 grit sandpaper.