Sunday 28th July 2024, 1.50pm (day 4,721)

In John Wyndham’s The Day of the Triffids is presented the ultimate invasive species. So hostile is it to human life that following a public health disaster the plant simply takes over. I believe some people get to live out a siege future on the Isle of Wight at the end of the novel. It ain’t happening quite so quickly with Himalayan Balsam, but nevertheless I do believe that we are in trouble. There seems to be more of it than ever, this summer.