Juvenility and Response Time of Kalanchoe Cultivars1

Abstract With 4 weeks of long nights Kalanchoe ‘Deep Scarlet’, ‘Yellow Darling’ and ‘Exotica’ reached maturity by the 10th week from sowing; ‘Melody’ on the 14th week; with 6 weeks of long nights ‘Morning Sun’ on the 10th week, ‘Ramona’ on the 12th week and ‘Red Glow’ >14 weeks. Response time, defined as days from the beginning of long nights to anthesis, was 13 weeks for ‘Hummel's Hybrid’ and ‘Ramona’; 9 for ‘Deep Scarlet’; 10 for ‘Yellow Darling’, ‘Exotica’, and ‘Morning Sun’; 11 for ‘Melody’; and <12 weeks for ‘Red Glow.’