Large white butterfly caterpillars

 I sowed nasturtium (Tropaeolum majus) seeds this spring, partly for the flowers but also because I was hoping that large white butterflies might find them and lay eggs. They did, and now the foliage is disappearing fast, thanks to some very hungry caterpillars, A nostalgia trip really, because I remember watching exactly the same thing happening in my parents' garden, seventy years ago. Childhood nature experiences can last a lifetime.