Grafting has the added bonus that the root stock can kickstart flowering. The hormones that stimulate flowering and fruiting are found in the roots, so if a mature root stock is grafted to an immature tree, a grower can reduce some of the time spent waiting for a tree to mature (which, for a coffee plant growing in the right environment might be 3-5 years, rather than the 30 it took for Little's to mature indoors). This is very useful for commercial fruit producers.
