Combine wine, sugar, vanilla bean and 250ml water in a saucepan over medium heat, stirring to dissolve sugar, add peaches, cook until skins can be easily removed (3-5 minutes). Remove with a slotted spoon, set aside to cool.
Add plums to syrup, cook until skins can be easily removed (20-30 seconds), then remove with a slotted spoon and set aside to cool.
Place syrup in a bowl placed over ice and stir occasionally until chilled (2-4 minutes). Peel peaches and plums, cut into wedges and arrange in serving bowls (place the plums carefully as they will stain the peaches). Scatter over strawberries and raspberries, drizzle with syrup to taste (see note), scatter with petals and serve with vanilla ice-cream, if you like.
Note Nasturtiums are available from select
growers' markets. Remaining syrup can be reused for poaching.