Sep, Oct, Nov
At its best:
Jun, Jul, Aug
Sow a few seeds into an 8cm pot, filled with John Innes seed compost. Water, label and date. Place the container in a cold frame or at the side of the house so it has some shelter. Make sure that the compost does not dry out, but only water when necessary.
Once the seedlings emerge in early spring, grow on until they are large enough to handle. Pot each seedling singly to allow each one space to develop.