Oneflewover
Landlord.
Probably not the most helpful answer, but it depends on the weather. Earliest I have is early April (I live in the south), other years I've waited until May. Peppers can sulk and you will stall their growth if you go too early. In any event I always put them out in the greenhouse during the day and bring them in at night over a two week period to harden them off. Just my two-pennethWhen would everyone suggest potting the chillies out into an unheated greenhouse? I'm going to prick a few of the runty ones out and get them out of the house soon.