Scott: The timing of SA bulb growth is a multi-faceted process. There are triggers that are both internal and external that initiate a bulb to go into dormancy and into growth. Many geophytes need the dormant period to initiate flower production. There are ways of manipulating a growth cycle but I think it requires both temperature and light control. Arnold New Jersey On 02/06/15, SCOTT VANGERPEN wrote: Zone 8 here in the Pacific Northwest. Window full of sun deprived growing bulbs. They had their summer dormancy. Anyway to encourage bulbs to grow later in spring rather than starting in November? Would rather not create artificial light. Scott