sentences:  It can be assumed fire has a physical effect such as 'cracking' the endocarp or in association with water/rain/moisture improving permeability of the endocarp.It can also be assumed that smoke possibly does improve germination, but artificial conditions don't provide the means for smoke to permeate to the seed embryo.Cuttings have been tried with many combinations of root-inducing hormones along with honey, sugar and coconut milk.