The moisture in the wood is what assists in curing CA glue.  However, woods vary as far as the acids contained and this will affect curing time so an accelerator such as GluBoost is best used for optimal results. 
A good example is Spruce, which happens to be very acidic as are many other woods. This acid could cause CA to take longer to cure or to not cure at all. That is the reason that we recommend using MasterGlu adhesives with GluBoost Glu Dry for all wood bonding, as well as for bonding wood and plastics together. GluBoost will dry all MasterGlu products quickly and clearly every time, with no foaming, yellowing, bubbling, hazing, or pitting.