After harvesting, strawberries and even rhubarb need to be fed with a fertiliser that contains organic potassium, such as Organic Multipurpose Plant Food., so this allows them to regain strength for the next year. Remove the runners from strawberries at the same time. Plants to be used the following year can be transplanted in a new bed. Add a little Organic Multipurpose Plant Food to the planting hole when replanting.
You can cut back sweet cherries immediately after harvesting. This is generally better tolerated than pruning in winter.