I presume you mean Alstromeria, if so there is some information here;

http://www.thegardenersalmanac.co.uk/Data/Alstroemeria/Alstroemeria.htm

Sow seeds in march, in pots of seed compost, and place them in a cold frame, or cold greenhouse, prick them out onto 3 1/2" pots and put them in a plunge bed in aq cold frame, and plant out the following spring. Derek.