After my plants were almost destroyed, I started to rotate them (they were eaten so quickly, most of them never made it out of their pots – the ones I planted out, I dug up again to save them from the hungry hordes). Rotating the plants involved letting the caterpillars have free rein on about half of the plants and keeping the others aside. This method generally worked OK, although, sadly, I did lose some caterpillars to hunger (I couldn’t find any more swan plants and the caterpillars wandered off in search of food and did not return).
I found out late in the season (March 2013) that caterpillars over a certain size (2cm long) can eat slices of raw pumpkin when swan plant leaves are in short supply. So my last few caterpillars ended up inside the house, with a diet of pumpkin and cut leaves, alongside several chrysalises that I’d rescued or simply moved in the hope of seeing the butterflies emerge.
I ended the season with 15 stalks that had once been swan plants (and they did not all recover), caterpillar poo on my desk, and empty chrysalises on my wall. Also, I had spent hours managing caterpillar feed, counting and hunting for lost caterpillars, nurturing plants, and staring through the viewfinder of my camera waiting for something to happen.
But I had laughed at caterpillars munching ferociously, jostling with each other as they fought over a leaf, and wriggling quickly across the hot concrete path. I had been transfixed watching butterflies emerge from their chrysalises, dry and test their wings, and take their first flight. And, to top it all, I had taken some pretty cool photographs.
So, instead of being put off, I was hooked. This season (2013/14), I upped the ante. I raised some swan plants from seed, so I wouldn’t run out of plants, and enclosed an area of our courtyard with windbreak mesh, to provide protection for my swan plants and the caterpillars and butterflies alike.
It’s not 100% finished yet, but my vision is of a garden filled with nectar flowers, lush green swan plants, and, of course, fluttering butterflies…. Wish me luck!