Cruciferous catch crops like stubble turnip, forage rape, and fodder radish are grown in southern England for forage, especially for sheep. These crops vary in yield and quality due to differences in soil moisture. Stubble turnip has the most consistent yield, while fodder radish shows the most variability. The crops' dry matter yield and digestibility increase in autumn, peaking in mid-December for stubble turnip and forage rape, and in late November for fodder radish. However, their nitrogen concentrations decrease when dry matter yield is highest. This suggests that these crops are suitable for grazing, as their quality remains relatively stable, making management easier.