Usually after blooming the plant will rest a bit and then in a few weeks will develop more bud stalks (scapes). Some of the newer cultivars keep sending up new scapes for what is referred to as instant rebloom. Hybridizer Karol Emmerich is breeding for that quality and I understand many of hers do that. I don't normally get a lot of rebloom living in the north but last summer was the exception. I had more rebloom than I have ever had in the 20 plus years of growing daylilies.