Long, slim pots or fabric bags fit snugly onto a windowsill and look attractive with woven willow surrounds. Fill them with compost to about ½in (1cm) below the rim and make drills ¼in (½cm) deep and about 2in (5cm) apart.
Pour seed into the palm of your hand and sprinkle it into each drill using your thumb and index finger. Cover the seeds lightly with compost and water thoroughly using a can with a fine rose to avoid disturbing the seeds.
Keep the compost moist and when the seedlings are 2–4in (5–10cm) in height, cut them as required, about 1in (2.5cm) above soil level. The plants should then sprout new leaves which can be harvested about two weeks later.