By hand, pull off the stems of the gooseberries and strawberries. Rinse well.
Remove the petals from the roses and coarsely chop the petals.
In a heavy bottomed pot, combine roses and water. Bring to a boil.
Add berries, lemon juice and sugar. Stirring frequently, simmer on medium heat for 10 minutes until the gooseberries have started to burst. Using a potato masher, crush the berries until none remain whole.
Continue to simmer on medium heat, stirring frequently, for 25-30 minutes, until the mixture thickens and starts to pull away from the pot when you stir.
Immediately transfer to a glass jar, to cool.