Sow indoors all year round. Simply fill a 9cm pots with compost, leaving a gap 1.5cm from the top of the pot. Place the mat on the compost and firm down gently. Cover the mat with a thin layer of compost then water thoroughly and allow the excess water to drain away. Water well and place in a warm, light position, away from cold draughts and out of intense, direct sunlight. Keep the compost just moist and be careful not to overwater, the compost should almost dry out before it is watered again. Pots can also be kept outdoors during the summer months but need to be acclimatised to outside conditions first. To do this simply place them outside in a sheltered spot during the day and bring them inside again at night when the temperature falls. Do this for a week or two, until the plants have hardened off.