Hi Bill Thanks for this thought-stimulating idea. I have never tried it on growing bulbs, only for seed germination. The full version of the paper you quote is not available free online - could you tell us what rate they used, how they applied it and how frequently to get the effect? I saw another paper at http://nrcs.usda.gov/Internet/FSE_PLANTMATERIALS/… 57.pdf which used a 1% strength solution of Colgin Mesquite Liquid Smoke to stimulate seed germination of Piligrass - would you use a similar strength do you think for the adult bulbs? Thanks Paul Cumbleton UK