Gardeners’ World presenter Monty Don issues advice about lawn care ahead of an expected UK heatwave, with temperatures forecast to reach about 34C. Multiple outlets report that Don cautions gardeners not to mow their lawns before Sunday, linking the timing to the extreme heat conditions expected over the weekend. The guidance is presented as a practical recommendation for protecting lawns during very warm weather, suggesting that mowing at an inappropriate time could stress grass when it is already dealing with high temperatures. The reports frame the warning as part of broader preparation for the spell of hot weather, encouraging homeowners and gardeners to consider both the forecast and the condition of their lawns before undertaking routine maintenance. While the sources focus on the “not before Sunday” message and the 34C figure, they also agree on the main theme: under very hot conditions, lawn mowing should be delayed to reduce potential harm to grass.