Previously Monty had said that the risk of blight was very minor in a greenhouse. But low and behold, blight has swept through his greenhouse. He first shows his potato blight, the fungus which can turn potatoes to mush and completely defoliate them, and it affects tomatoes because tomatoes are cousins of potatoes. So, having seen the damage he then stripped all the foliage off the plants thinking it would stop the spread, and that the existing fruit would ripen. So the only recourse was to harvest the green ones and make green tomato chutney, harvest any ripe ones that seem to be unaffected by blight and eat them, and then the plants and any blighted tomatoes, he would burn. And if they can't be burnt, he suggested burying them.