No matter how fastidious you are with your plants, there will be a residue of pests and/or diseases in your pots at the end of the season. Many of these come equipped with protective mechanisms that allow them to survive the winter and rise to infect your plants next year. Cleaning everything ready to make a fresh start in spring is time-consuming, but worth the effort.
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Missouri Botanical Garden
St. Louis, Missouri, USA
Monet's Garden, Giverny
Giverny, France
RHS Garden, Wisley
Woking, United Kingdom
Rio de Janeiro Botanical Gardens
Rio de Janeiro, Brazil
Ritsurin Garden
Takamatsu, Japan
Shinjuku Gyoen National Garden
Tokyo, Japan