It is because of the repeat flowering I asked. Unfortunately in our climate the irises advertised as repeat flowering do not do that for me. I think that our growing season is too short although we are more or less at the same latitude as Rome, so the day length must be OK, but first hard frost can come any time after September 20th, although this year I still had nasturtium last week. Bea --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com/