Flower sketch

A couple of years ago I acquired a packet of nasturtium seeds (a free gift with some magazine, I think).  This spring I decided it was time to use them to fill in a few bare spots in the garden.  In a couple of areas they grew and flowered as expected, but in the third patch they've spread like some monstrous triffid overtaking the lawn and existing plants.  Naturally, they have been the subject of a few sketches.  This one is pen and wash - the colours are nowhere near as vibrant as they should be, but in this instance I was more concerned with capturing their fantastic shapes.