Hello, Amaryllis rootactivity starts as soon as there is humidity and lower temperatures (here early september). So get the bulbs in place BEFORE that period. An other advantage that you may have flowering instantly after planting. Even so the bulb may require up to 2 years to become well established to allow forming a net work of fleshy roots. Greetings Lauw de Jager South of France http://www.bulbargence.com/ -----Original Message----- Amaryllis belladonna experts always told me that the best time to replant was in the fall, just after they bloom.