Vulpia myuros (L.) C.C. Gmel. has shown a dramatic increase in abundance as a weed of winter wheat since 2000, especially under regimes of no-till husbandry. A long-term experiment on disturbance timing at Silwood Park suggests that this increase is probably not due solely to no-till cultivation or to the plant’s well-known herbicide resistance, but rather to autumn cultivation coupled with warmer winter weather.