Sow at any time of year at 21-24°C (70-75°F), though best in spring to make most of the light levels. Soak seed for 48 hours prior to sowing. Set seed on the surface of compost and gently firm down. Seal in a polythen bag if no propagator is available. Do not exclude light as this aides germination, which can be erratic but usually takes 42-56. Aim to keep damp but not overly wet.
When large enough to handle transplant several seedlings per 10cm (4in) pot, filled with multipurpose compost. Position in a warm room away from cold draughts and radiators, aiming for a constant temperature of 16°C (60°F). Coffee plants prefer a bright spot out of direct sunlight. Can also be grown in a warm greenhouse where bean production is likely to be stronger.